2008 Search Queries

16 Play Station 3 == Powerful?

March 9th, 2008

Most people will take the new Sony PS3 home, could not wait to start playing "FIFA Street 3" or "VR 5" fighting in the war started. However, the United States astrophysicists Gaurav Khanna can be called heterogeneous - he used to build super computer simulation PS3 black hole collisions.

There are currently 16 Kanna PS3, which he PS3 all been linked with the provision of a 400 node supercomputer the same computing power. Kanna this was known as the "gravity Grid" (gravity grid) device physics department of the University of Massachusetts Savimbi used to simulate the activities of the Caltech. The project seeks to estimate the collision of two black holes, gravity waves generated by the properties. Gravity waves are in time and space, spread at the speed of light, "bellows."

Einstein’s theory of general relativity had predicted the existence of gravity waves, but they have not been directly observed. To Kanna on this device can run on the simulation data to the PS3 installed on the Linux operating system. This game platform is higher than the efficiency of complex operations on the high-end computer, entirely developed by IBM can handle high-end gaming features of "cell chip" credit.

Kanna wrote: "Any system Linux can be turned into a multi-function computer, in order to allow its effectiveness for me, I have to run on my own code to be used in astrophysical research. Such work is difficult I have to ensure that the algorithm can quickly on this platform operation, which means that I must optimize the Linux operating system for writing code, so that it can use the new super computer system function. "

16 PS3 from this appearance has not changed. They just use a 10-Gigabit Ethernet switches inexpensive link. Kanna said: "Generally speaking, a PS3 console performance. Is higher than that of the existing high-end desktop, or 25 IBM ‘Blue Gene’ supercomputer nodes

10 ways to set a secure password

March 8th, 2008

Most of user passwords are stolen more because of the lack of network security protection awareness and awareness of self-protection, so that hackers steal cause economic losses, today, I will talk about yesterday against 10 categories crack methods of response, 10 categories have also cited security and password protective measures, which helps users improve network security consciousness.

1, the use of complex passwords
Password exhaustive length less for a simple password very effective, but if Internet users to set up a password and no longer certain of features (such as some special characters and figures letter combinations), then the crack crackers exhaustive process it becomes very difficult, and often will crack long exhaustive losing their patience. Usually think, the password should be at least the length of more than six, eight more than the best, the best password and contains alphanumeric symbols, do not use pure digital password, do not use a combination of common English words, do not use their names do password, do not use passwords birthday.

2, the use of soft keyboard
Against keystroke-logging, there are a relatively common way is through soft keyboard input. Soft keyboard also called virtual keyboard, users enter a password when you open the soft keyboard, and then use the mouse to select the appropriate alphabetical input, and this can be avoided Trojan Records keystrokes, and, in order to further the protection of passwords, users can also disrupt Password order, and this has further increased the hackers crack the code more difficult.

3, the use of dynamic password (one-time password)
Dynamic Password (Dynamic Password) also called the one-time password, which means user’s password in accordance with the time or the frequency of use of dynamic change, each using only one password. Dynamic password for Screenshots crack very effective, because even if Screenshots crack your password, and there are only a crack passwords, the next will not use the login password. However, in view of the cost issue, which most dynamic password card is the kind of scratch paper original password card, rather than the true sense of the one-time dynamic password, or it is difficult to guarantee security. Real dynamic password lock used as a dynamic dedicated hardware tokens, built-in power supply, password generation chips and displays. Which number keys for user input PIN codes, screen used to show one-time password. Each enter the correct PIN code, the current can be a dynamic one-time password can be used. As each password must be used to generate dynamic tokens, and the use of passwords for each user are not the same, so hackers difficult to calculate the next emerging dynamic password. But the real dynamic password in the card costs around 100 to 200 yuan, higher costs limit its large-scale use.
Dynamic Password

4, phishing prevention
Prevent phishing sites is the method, users should be vigilant and not Login not familiar with the site, do not open the e-mail strangers, and the timely installation of antivirus software and operating system upgrades knowledgebase virus patches. Use safe mail system, Gmail usually will be automatically classified as phishing e-mail spam, and FireFox IE7 Anti-phishing website also features tips visit phishing sites have information.

5, the use of SSL to prevent Sniffer
Traditional network service procedures, HTTP, FTP, SMTP, Telnet, and other POP3 and, in essence, are unsafe because they are used specifically on the network passwords and data transmission, Sniffer can be very easily intercepted these passwords and data. The Sniffer (sniffer), we can use session encryption programme, the transmission of all the data encryption, even if such Sniffer sniffer to the data, the encrypted data is difficult to decrypt irrevocable. Is now widely used SSL (Secure Socket Layer) and they can facilitate the realization of security encrypted data packet transmission, password when user input should be used to support SSL protocol manner log, for example, HTTPS, SFTP, SSH rather than HTTP, FTP, POP , SMTP, TELNET, and other agreements. The majority of services, including Google Gmail support SSL to prevent the Sniffer monitoring, SSL security certification can be in an unsafe network security communications.

6, do not store passwords in the local
Will be preserved in the local password is a bad habit, many applications (such as certain FTP, etc.) saved password and not very safe design, if not a very good local encryption strategy, it will allow hackers crack the code open convenience doors.

7, the use of USB Key
USB Key is a USB interface hardware. SCM or its built-in smart card chips, a certain degree of storage space, users can store the private key and digital certificates, use the built-in USB Key public key algorithm for user authentication. The user’s private key stored in password-lock, in theory, the use of any methods can not read and therefore guarantee the security of user authentication. Because USB Key higher degree of security, and cost only a few bucks, USB Key widely used Internet banking encryption of digital certificates. Use USB Key, even in remote hackers full control of the user’s computer, they can not successful login authentication transactions.
USB KEY

8, personal password management
It is necessary to formulate strict password management system, the implementation of the regular replacement of passwords can be replaced a monthly or quarterly basis. Never will be password written on paper, others do not use easily guessed passwords.

9, Password hierarchy
For different network systems use different passwords for critical systems use more secure passwords. Do not all systems use the same password. For those who occasionally Login forum can be set simple passwords; for important information, e-mail, online banking, such as the need to set up complex password. Never should forums, e-mail and set up a bank account with a password.

10, Biometrics
Biometrics technology refers to computer, the use of human physiological characteristics inherent in the behavior or characteristics of individual identification. Commonly used biological characteristics include: fingerprints, palm prints, iris, voice, handwriting, such as the face. Biometrics is a simple and reliable biological password technology, bio-identification technology that is the people themselves, as each person’s biological characteristics are different and the only other person, as well as the stability of the same in a certain period of time, it is not easy to forge and counterfeiting, therefore, in the maximum guarantee the safety of personal data. At present human identification technology on the market share is the highest fingerprint machine and hand-shaped machine, the two identification technology is currently the most mature.

ATI V.S NVIDIA

February 19th, 2008

ATI and NVIDIA fight each other for a long time,  and many friends may think that ATI is a weak side and make unremitting efforts to achieve an equal footing now . However, the fact is not really. ATI is early than Nvidia for eight years, ATI, which was established in 1985, with a public company in 1993, its economic strength has been extremely strong. Compared NVIDIA, ATI in a public company, has just set up his talent, but does not have its own production plant, it is purely a chip design company, not its own production capacity. Contrast this, in terms of technology and investment as well as from the capital market share, both ATI occupies a very big advantage, and the NVIDIA in a variety of resources are stretched. Therefore, ATI is the real strong.
But why ATI will give us the "weak" impression? ATI worked with years in the OEM market and brand, and the individual not paid enough attention to the consumer market is inseparable from, which makes ATI and NVIDIA in 1997 is not much before the conflict, there have been no positive confrontation, because wwww.NVIDIA.com targeted market (NVIDIA main personal entertainment market) and ATI did not overlap. So, with NVIDIA in the personal consumer market superpower, the end of the market in the vast number of individual consumers, will result in a stronger ATI NVIDIA strength of the impression.
Said earlier, in 1997, ATI and NVIDIA is no more obvious positive conflict, but as the individual consumer market will grow rapidly, ATI has to re-examine its past is not optimistic about the personal consumer market. In this context, ATI has finally launched in 1997 good performance 3-D core Rage has been added to the retail market for. At that time, NVIDIA graphics market is not a monopoly situation, but there are more than 50 graphics design and manufacturer. At the time of course, is a thriving 3 DFX, their classic VooDoo2 card also is the year. Others, such as Matrox, NVIDIA, Renditiom, S3, 3Dlabs, ATI, Cirruslogic, Trident, Videologic, even Intel have joined the battle group. Comparing the old and some eligible players should also remember that their bar, huh. Overall 1997 graphics card market is a very confusing year, and this situation has been chaotic 2000 to be a fundamental change - NVIDIA beat all rivals to become the dominant card retail market.
Therefore, we have to understand between ATI and NVIDIA ex grudge and resentment, it is necessary to begin from 1997……
May 1997, ATI issued his strongest performance of the Rage Pro graphics chip, but the driver was very bad. Basically reached in the performance with NVIDIA common opponents - 3 DFX the VooDoo cards. But then almost all support VooDoo graphics, wearing the crown firmly in the heads of three DFX, ATI and NVIDIA only to the second and desperately.
3D Rage Pro production of 0.35 um, with a pipeline and a unit of Arts; core frequency of 75 MHz, 75 MTexels / s fill rate, 64-bit interface significantly, the type of SDR 100 MHz memory frequency, as well as poor 0.80 GB / s memory bandwidth, support was the latest DirectX 6.0.
April 1997 NVIDIA to their RIVA128 chip (code-named NV3) joined the ranks of competitors (August sale), which under DirectX significantly more than Voodoo. This is more than 640 × 480 pixel resolution, in particular the use of the texture Obviously, this is due RIVA wider memory bus and a built-in the DirectX compatibility.
RIVA128 was the first to support the AGP 1X interface (AGP (accelerated graphics Accelcrated Graphics Port Interface) bus width of 32 Bit, clock rate of 66 MHz and 133 MHz two, the biggest data transmission rates as high as 266 Mbps and 533 Mbps. To AGP main memory for frame buffer (Frame Buffer), texture data can be stored in them, thereby reducing memory consumption, realizing high-speed access, effectively solved the 3-D graphics processing bottlenecks) and the effect of nebulized (Fogging: atomization. color and background will be a mixed to hide background to achieve mist effect) products.
Support the hardware triangle formation, with the 128 - the two D/3D bit accelerated graphics core. Fill rate reached 100 Mpixel / s, the largest 4 MB SDRAM / SGRAM, similarly equipped with a rendering pipelines, and a unit of Arts.
In 1997 ATI and NVIDIA’s confrontation, the NVIDIA Riva 128 with 128-bit graphics core, the speed is obviously higher than ATI’s 3 D Rage Pro, but its quality is not D Rage Pro 3 so exquisite. So this round, with victories ATI and NVIDIA (In fact, the speed advantage advantage screen more than practical significance).
Time to enter in 1998, this year was the most competitive graphics market busy year, or graphics intensified market competition year. Graphics market this year, also started shuffling - NVDIA emerged, three of the Challenger DFX unprepared for the attack, the pace of R & D have a disorder, and ATI? This year is not as a number.
First take a look at May 1998 release of the first NVIDIA Riva TNT, which is in the most sensational 1998 card, because it is the prevailing one in the performance of the graphics VooDoo completely knocked out, this is by virtue of graphics, NVIDIA representatives established a high-performance 3-D graphics card’s image.
Riva TNT was released, with a host of new technologies, including core technology TwiN Texel engine, a two-megapixel 32 - bit rendering pipeline. The 32-bit pipelined allowed in a clock cycle can also handle two pixels; The other is 24 Z-Buffer (Z-Buffer is a 3-D objects dealing with the depth of information technology, its different objects and different parts of the same object of the current Z coordinates record, in color, for those in the other objects hidden behind the structure, so that they will not be displayed. Z Bufer used by the higher median will represent it can provide more accurate value of the depth of field) The eight templates, supports a wide range of graphics filters such as MIP textures per pixel imaging guarantee the clarity of the biggest supports 16 MB of memory, making new graphics chip in the image quality on a significant improvement in the handling of 3-D image quality also a substantial increase (to the 32-bit true color).
Now we look at NVIDIA TNT, as well as its rival ATI graphics card in October 1998 issued by the Rage 128 core. In fact, due to the release of Rage 128 hours late, he appeared on the market in time, the NVIDIA TNT2 has been issued, so that Rage 128 is outdated products, but because ATI in the entire October 1998 to 1999 In August, and there is no better product, Rage 128 has been insisting for nearly a year’s time才被his successor by the Rage 128 Pro GL alternative.
Rage 128 core specifically for the design and rendering 32, 32 rendering environment will only cause less than 5% of the performance loss, so many test its performance compared with the TNT2 also not very different, it has built-in MPEG2 decoding and dynamic compensation circuit can be smooth DVD playback. Rage128 is divided into GL and VR models, the main VR on the low-end and high-end GL. Rage128 GL is the first one fully supports OpenGL hardware on the chip. However, as time to market too late and the driver failed to issue it as TNT2 as for the whole world.
From a performance point of view, Rage 128 in the specifications, then to slightly higher than TNT, the performance is slightly higher than TNT. From the market point of view, the late release, along with its worst drivers, it did not become as mainstream as TNT. From this perspective, ATI lost in the 1998 NVIDIA. ATI To save the Rockets, only accelerate the speed of development, shorten the release cycle of new products can be overbearing in the NVIDIA momentum in the retail market under a firm footing. However, things are not we think this way? Let us enter the 1999……
1999, the card market is not an unusual year. In the past year, three DFX start toward its doom, NVIDIA begun to emerge; ATI finally catch up, keep up with the NVIDIA behind, and S3 far failed to keep pace with NVIDIA and 3 DFX pace of technological upgrading, are already sunset yellow flower, Matrox also beautiful only by virtue of its clear support 2-D picture of hard, and has been the NVIDIA TNT2 forced insufficient, and other graphics closure of the closure of the production, acquisition merger. 1999 after 2000, the chip market brands has been greatly reduced. All this, and the NVIDIA TNT2 graphics card has a very close relationship. But the good news is, ATI as a solid financial and technical strength as backing, the major reshuffle in 1999, and did not fall from ATI, although in 1999 the same throughout the year as not much.
Well, now back to the question. Let us look at this year ATI and NVDIA confrontation between the two core - RAGE 128 PRO GL and TNT2. First, we take a look at, first in RAGE 128 PRO core releases TNT2, this is NVIDIA for the resistance has become a trump card in March 1999 release.
TNT2 the core code-named NV5 In fact, this is only the improved version of TNT’s production from 0.35 to 0.25 um um change, the introduction of new technology, the core operating frequency is not a small increase, the standard version will be able to run on 125 MHz frequency, 32 MB of memory, 32-bit frame buffer support, and support DVI output interface, peak speed of 250 Mpixels / Sec. Even if it is only an improved version, but he left two months after the release of the VooDoo3 also eclipsed. In addition, it should be cheaper than many VooDoo3, TNT2 then become market-driven inevitable.
Then look at the April 1999 release of the RAGE 128 PRO core. From the name, we can also see from, RAGE RAGE 128 PRO is only improved version of the 128, only 128 RAGE enhanced on the basis of some properties, as well as improved operating frequency. But its size has been the same with the TNT2, such as the use of 0.25 um process, the working frequency is 125 MHz, pixel fill rate also reached 2.5 MTexels / s, the memory is still 128-bit wide. Rage Pro 128 and Rage 128 compared not only substantially increase the frequency of core and memory, and support for the heterosexual filtering, upgraded triangle generation engine performance than Rage 128 increase by nearly 50 per cent.
From a performance viewpoint, although RGAE 128 and TNT2 PRO with similar specifications, but in the speed of 3-D games still lag behind the TNT2. However, ATI in RGAE 128 PRO legacy ATI quality advantages in the video playback than TNT2 an edge. From this perspective, it should be well-matched in the two. However, it is the pursuit of speed much higher than that of the pursuit of quality. Therefore, from a market point of view, RAGE 128 PRO defeated by the TNT2, ATI and NVIDIA’s three previous confrontation have ended in failure.
In fact, in 1999 NVIDIA also set off a revolution in graphics display technology - GeForce256 release, but since it is the first time the concept of GPU, did not have any cards GeForce256 a core of advanced architecture, and so in 1999 No, a card can defeat it, but it also set off a new display technology revolution, it was only because of price reasons, the TNT2 is still the mainstream of the time. Perhaps many of my friends think that the ATI and NVIDIA fourth confrontation, will appear in the GeForce256 possession, but that is not the case, then, ATI and NVIDIA in the fourth confrontation in which the two chip? The answer, in the 2000……
NVIDIA, the new millennium is to establish the hegemony of the year status, but also to meet the challenges of 2001. Enter 2000, NV GeForce256 show its revolutionary core, knocked down a large graphics core design manufacturers, thereby establishing its graphics core of the dominant position in the market. This year, the core brand has been greatly reduced, only a few of the more well-known brand is the impact of the hard NVIDIA support (ATI exception).
3DFX go at this time, it is already a spent force, released VooDoo5 cards in the market do not survive long, and is the envy of the VooDoo5500 VooDoo 6000, as well as graphics or even appeared in the market. Matrox Although 3-D has been completely abandoned by the graphics market, but by virtue of its high-quality 2-D output, there are still a large number of industry users to its respected times, in 2000, Matrox is still difficult to maintain. Only ATI, with a strong financial and technical support, and still stick with.
NVIDIA since November 1999 issued a landmark GeForce256 graphics chip, because of its structure is a new graphics core, many manufacturers caught off guard by his play, it can be said there is no retaliate in force, since its release five months, no vendors have issued a threat to its core graphics. Until April 24, 2000, ATI’s Radeon256 (in fact, is what we usually Radeon) to release before the NVIDIA remove the crown of the king of performance. But, the good time on the core Radeon256 ATI released after 48 hours, that is, the same year on April 26, NVIDIA also announced its next-generation core - NV15, and officially named the GeForce2 GTS. ATI and NVIDIA This is the fourth confrontation.
For these two products, their specifications, as well as a very similar structure, and performance testing has shown the characteristics are very clear: GeForce2 GTS in 16 bit color mode to the test results generally higher than Radeon256. The Radeon in 32-bit color mode, test results are generally higher than the GeForce2 GTS. This is, we can from the following seen in test results.
Although they have a high performance low, but on the whole, the gap negligible in actual use, and they do not feel is basically out. Therefore, in this confrontation, ATI since 1997 and the first time since NVIDIA on the same starting line. NVIDIA performance also marked the first time the threat of great challenge. However, due to the operation of the market, such as price-driven procedures, as well as the reasons, Radeon256 ultimately did not win the majority of consumers recognized, ATI competition in the retail market is still a long way to go. Anyway, 2000 is ATI NVIDIA in the process of catching up with the most practical significance of the year, because they have proved their ability to transcend NVIDIA.
If I have reviewed this year between them who wins, then I will still be sentenced NVIDIA win because they insist every six months to conduct a graphics technology updates, according to its own rhythm introduced products, the operation of the market as a whole has done has been very successful, and its driver has done very well, N card compatibility and stability are excellent. From this perspective, again better than the ATI NVIDIA.
In 2001, most people sad happened, especially VooDoo fans, 3 DFX, in the middle of NVIDIA acquired by its rival, 3 DFX launched the stage of history, VooDoo cards also disappeared. 3DFX withdrawal will be the first time ATI and NVIDIA VS 1 to 1 in the form of market competition. (At this point the Matrox has no ability to compete with ATI and NVIDIA, S3 is almost to the end of history.)
1 VS 1 situation for ATI and NVIDIA, are good news. Only because they bear the pressure side, and not have to worry about the multi-faceted enemy. Nevertheless, ATI and NVIDIA between competition and thus did not slow, but more and more intense. NVIDIA pursued in the six months that is not on the cards for the first update technology strategy, ATI only in terms of time and NVIDIA competition, efforts to shorten the research and development cycle to ensure that their products are not in leaving behind NVIDIA.
It is precisely for this reason that graphics performance over the previous year and doubled. NVIDIA on February 22, 2001 issued their GeForce3 graphics core, and divided into GeForce3 Ti200 and GeForce3 Ti500. In fact, GeForce3 graphics core is Geforce2 improved version, strictly speaking, not a new generation of GeForce3 cards, because of its performance and a GeForce2 Ultra. In August 14, ATI announced their carefully designed Radeon 8500 core, performance and NIVIDIA once again tied the GeForce3 war.
This time, though still not exceed ATI NVIDIA, ATI’s reputation but because the GeForce3 worse and the rising cost, ATI’s share in the retail market is also growing, has been a serious threat to the NVIDIA hegemonic position needs a NVIDIA truly high-performance graphics cards to combat ATI. This time, ATI gain the victory……
2002, NVIDIA will use any weapon to regain lost positions? Please Read on to……
Is February, February 22, 2001 NVIDIA released a superficial change the transitional product GeForce3 graphics chips. Published GeForce3 with almost the same day - February 6, 2002 NVIDIA released its new generation of GPU graphics core GeForce4 family. There are three Titanium version (code-named NV25): GeForce4 Ti4200 set at 250/250 clock; Ti4400 for the 275/275, and 300/325 set GeForce4 Ti4600 under. In addition, three entry-level MX version (code-named NV17) based on the updated MX graphics chip performance is no less than 18 months before the release of the GeForce2 Ultra good. This is intended to be used to suppress NVDIA ATI’s "Lethal Weapon" Nevertheless, the unexpected NVIDIA, ATI is in the subsequent release of 9700 (the core code-named R300) series graphics, GeForce4 cards is a glory. Please…… or because we see a few test results, and it will clear.
Do little to note, the above three results were from a number of sites Evaluation Room, from the results of the different sites found that the results are basically the same, which avoid the man-made factors. From the map, we can easily see that R9700 card has been full of achievements ahead of the GeForce Ti4600. This NVIDIA, is a resounding slap in the face in mind, the dream of pumping from NVIDIA Peter.
ATI see the results so that more consumers have trusted their products, thus choose ATI graphics. As for the media in the year, ATI Radeon 9700, and they became the target of frequent commended. It can be said that 2002 is ATI came as a year. Along with the media and much praise, ATI’s share in the retail market expanding further, NVIDIA dominance of the situation of a complete break. This year, ATI is a turning point in the retail market, and since then, ATI’s brand enjoys popular support, and graphics sales in the retail market steady growth, ATI also This is the first year, on an equal footing with NVIDIA together to carve up the retail market.
ATI was bitten by a ruthless fashion, NVIDIA naturally will not concede defeat, therefore, in 2003, a new round of competition will be staged at……
In March 2003, in order to restore GF4 cards on the decline in performance, NVIDIA released the name of a next-generation FX graphics. NVIDIA FX series of cards is the fifth generation graphics in this generation of graphics performance is the most outstanding GeForce FX 5950Ultra, this card is actually in the 2003’s October release, has been from 2004 near, or from the sixth generation of NVIDIA cards issued has been close, but in any event, NVIDIA GeForce FX 5950Ultra is the fifth generation of graphics in the top of the. However, the fact that GeForce FX 5950 Ultra graphics card is not very successful, first of all, but it is up to the price of 500 dollars, followed by the performance is that it can only be an equal and 9800 XT.
ATI again in 2003 to see the new move. In fact, the entire 2003 ATI in the busy rich product line things, in this year of 9 Series ATI graphics unprecedented wealth, from low-end to high-end 9100 XT 9800, the product line was significantly breakdown at the same time NVIDIA and the competition is becoming increasingly fierce. ATI in the course of the year should be representative of the 9800 XT, ATI graphics represent the highest level in the year, NVIDIA FX 5950Ultra because it is released while.
That being the case, we have to look at the performance of both the above comparison. In related sites to test, the majority of projects are undertaken by 9800 XT lead, only NVIDIA strengths - OpenGL performance test, leading to 9800 XT. Although the 9800 XT leading modest, but it also shows that the 9800 XT is a performance advantage. However, only a small advantage for GeForce 9800 XT and the 5950 Ultra however.
Look back at 2003 graphics card market, we can easily find, and he ATI and NVIDIA in the retail market beginning of a comprehensive confrontation. They have various product lines corresponding products, such as low-end market Radeon 9200 against GeForce FX 5200, in the high-end market against Radeon 9700 Pro GeForce FX 5700 Ultra, a high-end 9800 Pro and XT Radoen against GeForce FX 5900 Ultra and 5950 Ultra.
Although NVIDIA GeForce FX 5950Ultra not by virtue of winning the crown of the King, but the sixth-generation NVIDIA graphics have been ready generation of……
April 21, 2004, NVIDIA in Beijing first to announce their sixth-generation core - NV40. Based on this core NVIDIA cards were divided into four grades, and they are:
GeForce 6800Ultra: a 16 pixel pipelines and six vertex pipelines, the working frequency of 400 MHz/1.1GHz, N card is well-deserved king;
GeForce 6800GT: a 16 pixel pipelines and six vertex pipelines, MHz/1GHz frequency 350, the 6800 Ultra is basically down-version;
GeForce 6800: a 12 pixel pipelines and five vertex pipelines, 325 MHz/700MHz frequency is 6800 series of civilian products;
GeForce 6800LE: The eight pixel pipelines and four vertex pipelines, 300 MHz/700MHz frequency is nVIDIA OEM market for a product.
NVIDIA opponent at this time - ATI, not idle, they are also strained the deployment of a new generation of cards issued to date. Finally, NVIDIA released the sixth generation in the core two weeks after the NV40. That is, for all Chinese people on both memorable May 4, they issued a long-simmering R420 core. However, a total of two products based on the R420 core, they are:
Radeon X800XT PE: Radeon X800XT PE with 16 pipelines, 520 MHz/1.12GHz frequency is at the top ATI graphics processor, and its competitors was designated as the GeForce 6800GT;
Radeon X800Pro: Radeon X800Pro the pipelines for 12, 470 MHz/900MHz frequency, ATI launched targeted at the high-end products, its competitors are located in the GeForce 6800.
NVIDIA and ATI’s next generation of core release, the bugle of the two last confrontation, which is the eighth confrontation sounded. Comparison of firepower from both sides, in ATI’s R480 core release, NVIDIA occupy the absolute superiority. Its 6800 Ultra in 2004, no one could spent most of the enemy.
This situation remains to December, with ATI’s R480 core releases, ATI did not end with NVIDIA GeForce 6800Ultra cards to counter the embarrassment. Based on the R480 core product is now the top ATI graphics - X850XT PE, against its competitors GeForce 6800 Ultra.
Related measure that X850XT PE in performance compared with the GeForce 6800 Ultra, can be said to be well-matched, each have their own advantages. Especially in their respective areas of expertise, performance becomes more apparent. GeForce 6800Ultra in OpenGL performance testing, substantial lead X850XT PE, and in DircetX item test, the situation is exactly the opposite. From this we can be in the table above to see the results.
Therefore, in this time of the confrontation, NVIDIA and ATI seek to benefit no one, which also explains NVIDIA and ATI’s R & D strength has been well-matched, and no one can really beat each other on the significance of their cards on the market "grudge" will also continue, with graphics technology will be their "non-hostilities" forward

What is HDTV ?

February 13th, 2008

What is high-definition image? what is HDTV? 1080 FUHD ? HDTV is High-Definition TV, high-definition digital television. In fact, this concept can be expressed very simply. The so-called "digital" is in contrast to the original "simulation", refers to filming, editing, production, transmission, reception, and so the whole process is the use of digital technology in television system. The so-called "high-definition" is opposed to "standard definition" (standard definition, SDTV, digital standards should be 480 P) terms. What is meant by "high-definition", it is currently three models:
1. 1280 × 720 (non-staggered, field frequency for 24,30 or 60), that is, we normally say 720i.
2. 1920 × 1080 (staggered, field frequency 60), that is, we normally say 1080i.
3. 1920 × 1080 (non-staggered, field frequency of 24 or 30), that is, we normally say 1080P.

HDTV video signals are using MPEG2 compression, audio signal compression is using AC3. CHD HDTV finishing the work, usually with better results, such as DTS tracks replace the original AC3 soundtracks, to more outstanding results, or adding different language tracks, or the sound produced dual tracks track version.
DVD also used MPEG2 video compression, but that does not mean that the software DVD player can play HDTV. DVD because of the use of MPEG2-PS format, MPEG2 Program Stream are mainly used for storage at a fixed long program. And HDTV use the MPEG2-TS format, MPEG2TransportStream, is a streaming video format, mainly for the transmission of real-time programming. Therefore, in order to broadcast HDTV video source, the players are required not only MPEG2-TS codecs, but they must also have a special HDTV separator.
2007 United States mainly TV electronic shopping malls are updating HDTV, in the first half of 2006-2007 mainly HDTV 720P TV by 2007 from the second half of 1080 that we are talking about P FUHD. At present the majority of television households in the United States also use analog TV receiver the past. Although there are many families have been CABLE TV signal, satellite TV signal in the receiving enjoy our daily programs, but most families remain in the standard definition SDTV stage. According to my observation, at least in the United States is 85 percent family SDTV stage, 99.99 percent of families in China SDTV stage.
Why does the United States so far has not developed universal HDTV, why should China today powerful economic and technological market power has not yet entered the stage of HDTV? This question itself is a thesis topic, the author of four simple reasons summarized as follows: 1. HDTV television receiver universal, 2, the number of HDTV television channels, three HDTV video signal production and transmission of technical problems, 4, and the people’s economic purchase capacity. In the United States the basic technology is not an issue, I think that the main economic issues. With the price of HDTV displays declined, and the people buying big-screen HDTV to raise, HDTV displays should be popular in the United States is not a long time.

Whether you have HDTV display TV you can enjoy HDTV high-definition programming? The answer is not yet. Because you must have a programme HD signal can enjoy, such as WWE and etc. In the United States cable television companies, satellite TV channels are beginning to have the HD signal channel, but must pay other costs of HD channels, the prices of many restrictions HD TV woodtv.com with the family on the enjoyment of high-definition television programming. At present the United States started in many cities could receive free sky launch digital HD channel signals, the author can be received in Southern California more than 10 FREE HDTV programming, it must be a good buy HDTV antenna. In China today is still not universal HD signal, a CCTV said in 2008 started charging HD channels, and the author of this are expected to 0.01 percent on the family has begun to enter the HD channel receiver.  Personally, I love Comedy Central TV very much.

In addition to television channels in the United States can enjoy high-definition HDTV signal, there are still very important signal source - Blue RAY Disk film and HD-DVD. I now keen to enjoy through the Blue Ray DVD large American movies, TV HDTV home to give full play to effect.
     Cable companies now whether or satellite company for the best signal only 720 P i and 1080, only through Blue Ray DVD or HD DVD can enjoy high-definition P 1080 best effect. Blue ray DVD release to the needs of Blue ray DVDPlayer, HD DVD players need HD DVD Player. In addition to the enjoyment of those who pay.
  Blue Ray DVD and HD DVD prices in the United States a 20 - 60美元ranging from a general at 25 dollars. I find that the United States Blockbuster video rental shops BLUE RAY DVD. On the card to run on a 1080 P films, many of the cost savings. Otherwise, 1080 P to enjoy high-definition video images is the high cost ah! But think we can first enjoy Full HD 1080P images, it is the enjoyment of life. China has not yet what 1080 P DVD can enjoy. Think this respect than the United States to move ahead in China.
  2007 computer game has entered a new era, the most important thing is Sony PS3 and Xbox360 support high-definition images, with their own particular PS3 BlueRay DVD Player for high-definition movies imdb.com and promote many of the homes. The author in the 2007 purchase PS3 60GB Let me home SONY 1080P TV play a significant role. PS3 can not only play the game, and more importantly, it can play 1080 P BlueRay DVD. I also use it to look at digital photos even more shocking people! My digital photos are on the computer to see past, since a PS3, my digital photos directly plugs into the SD card reader PS3 players enjoy the big screen 1,080 p HD Photos.
   In addition, Sony PS360GB I spent 499 US dollars, which I will let my play 1080 P powerful as TV. PS3 addition to the United States to see large Blue Ray DVD movies, see digital photos, play high-quality computer games, there is a role, it is a computer Internet, I use it in the big-screen TV view website information. SONY Corporation is grateful to bring mankind to create new high-definition image!
  From the above discussion on the 1080 all high-definition imaging applications have some concepts, now further explore the issue of HDTV video signals produced. On the front, getting home-P 1080 big screen TV, if not to buy high-definition television channel signals, but also unable to enjoy high-definition images. I feel just spend money on high-definition television channel signals can be said that the enjoyment of the primary stage, how you are living in the image is high-definition images with full significance. Special presentations in front of the computer games and digital photo display HD enjoyment now explore is how to make what we see our lives to move to HDTV images, in particular how to record my friend singing a concert high-definition video, it is imperative to a HD high-definition cameras.
  The camera is on the market, but the real 1080 Full HD cameras in the United States only some, and the author in 2007 purchased CANONHG10 1080 Full HD cameras, saw a real life HD high-definition images. I feel that high-definition image has begun to enter our family life. High-resolution image production process involves many technical concepts, not here on January 1. Again next time, such as decomposition.

   In the United States we entered the electrical department stores, large flat-panel TV sets are already thin television, and in 2008 will enter the mainstream TV 1080 P. However, the United States today to the major electronics store can not buy any special HDTV recorder. Although TiVo ® HD DVR special equipment CABLE company in the United States, but it must CABLE companies and signal connections, must pay high service charges, use of the restricted. I am still looking forward to 1080 P recorders available in the United States. As many good programmes can not simply recorded together.

  Home computers and laptops direct access to HDTV monitors in 2008 is the new direction of development. HDMI interface has begun to enter the computer high-end computers, high-end computers is expected in 2008 should support HDMI interface. I upgrade my computer image on the memory card, so that my computer I can directly access TV P 1080. Its demonstration effect is shocking!
  Many families earlier on HDTV applications, forgot to tell everyone that their family early 1080 HDTV economic cost is also higher. 2007 I invested in HDTV about 6,000 dollars (3,000 US dollars which SONY 1080P TV, 1,000 US dollars 1080 HD cameras, 500 dollars SONY PS3, Blue RayDVD rental 120 US dollars, games and movies HD-200 US dollars, 120 US dollars HD antenna, HD TV 1000 US dollars), is expected in 2008 we spent 3500-4500 as long as the dollar would be in HDTV into the home. Therefore, the purchasing power of the people or the economy currently restricts access to the family HDTV one of the factors.
  With the development of computer network broadband, fiber optic lines into the home, IPTV will enter our family, HDTV images will enter our computer network, that time is our main TV HDTV displays.
   January 7, 2008 in the United States Las Vegas the opening of the CES showed the world’s largest television screen is PANASONIC150-inch television and the first portable HD DVR recorder. HDTV tell you all this new era will be entered our lives, into our family.

Thoughts about Products

February 13th, 2008

I think that products can be considered in high-level as three-oriented view, this is the three-oriented technical, aesthetic, as well as the applicability. And the quality of a product with this inseparable from the three-oriented relations. This is not entirely for the three independent existence, the independent existence of the product, which is complementary to the three-oriented, in which only a matter of degree.

Technology degrees
Technical means of a product can do certain things level. For example, we say that iPhone can support multi-point touch screen relative to other general iPhone mobile phone technology at this point in the relatively high above.
In the IT industry, is often cut into the perspective of technology, because technology continues to upgrade its status can be from competitors, or even create future technology, in addition, the pursuit of the objective of technology is a relatively simple matter. Relatively simple is not to say that technology is a simple matter, but said, as well as in relation to the application of the aesthetic, the pursuit of technology is relatively simple. To the pursuit of technology because most of the time is always a clear direction, for example, CPU performance, and our increasing hard disk capacity, that is, the pursuit of technology. High-performance CPU and the hard disk capacity or more must be required by everyone, there is no fuzzy areas. Therefore, the technology of the industry is often the first goal, and usually is: I can achieve, you can not reach, so I take-market. future technology industry is the right direction, but the long-term view, technology future be short-lived. Because today’s technology you can achieve in a period of time, your opponent also reached Therefore, in order to maintain the future technology, it must, as chairman Cai said, not to be a champion generation.
Technology can not be touched by the people, because more often than not moving the technology, creating technology future usually is not easy to create user loyalty. Of course, in the minds of the average user, nor will the drug technology as too complicated matter.

Appearance
What can reach the technical level, it is a very objective measure. However, merely to be used seems to be not enough. At this time, we need to design the appearance of our products, the entire product looks very tasty, good product design allows the whole lot of value-added products. Technology in general objective. But there’s really no such non-objective, as each of the total number of popular trends, like we do now three C’s product design, it seems that the design can be summed up some of the criteria, it seems that those who deviated from the norms of design has become nothing " texture "products. But we should design a general view was that good design is not so easy, because they involve more complex social environment and appearance cognitive problems.
Therefore, when a product has reached the level of technology, to start behind the pursuit of the above is the design aesthetic. And the general public awareness inside, the so-called good brand that is know how to design, and the design in most people’s awareness that there are large aesthetic appearance of the design of ebay.com.

Usability
Geoffrey A. Moore in 1991 had proposed the concept across the divide. He believes that a just out of technology products, only the most contact with the new fad like the players will be to purchase technology to Taiwan as an example the case, probably refers to the web site often. This time, this new technology or new and innovative products and will not be accepted by the general public, because it is too new a concept. Therefore, whether it is in the price threshold, or acceptable threshold heart users, or the design of the products on the threshold of the general public will be excluded. In order to exclude this threshold, it must cross this, "divide" across the divide with many factors, including with the design of the products had a great relationship. We are not here to explore ways Crossing the Divide this matter, but on products across the divide should be after the performance of things.
But across a divide, on behalf of this product or technology can be used by the public universal. In products, which must be considered in the technology is not the issue can be achieved, nor is it aesthetically pleasing appearance, although these two issues are very important. In this phase should take into account the general public for the application of this product in question. Usability in English, is the problem.
Technology can be achieved in the above matter and does not represent the application of the good. A practical example, a Video Today, I should insert my Blog, I may need some knowledge of the code can be done this matter. And the use of relatively good situation, the user does not need to know what code, as long as the application before he knew the "copy" and "paste" so one thing, can be affixed to the Video Blog them. This is what is called for the enhancement of the application.
In aesthetic upgrade of the above may apply to the improvement of relations that have not. We all read the design looks very pretty, but it is not practical, perhaps, as the design was still living in the good in people would be more vision.
Therefore, when a product beginning to face the public, we must seriously consider the issue of the application. The problem is the application of technology than of beauty and also for more complex problems, the difficulty is that it involves a more level,  social environment, users mind, the host culture, ergonomic… and so on. When applied to real understanding of the importance of the time, to truly understand the real value of a product when, and which is to support the brand is the cornerstone of the real.
Why would we know that? Because at the technological level of the time, usually to create the one-way, I have what technology, what technology you use, and a competitor, is beginning to increase value-added products, products on the point of makeup, users seek review favor, and taking into account the application of the time, this time the user is on an equal footing with producers, manufacturers are really taking into account the users, and the use of feedback to users design a high degree of application products. Because, if you do not do this, your opponents will do so. Therefore, when a company began to seriously consider the application of the products of the time, it is the real beginning of the users concerned about it, it is really beginning to understand the significance of brand.

Aggregate
It is just like the one mentioned at the beginning, this is the three-oriented products, no one would exist independently. However, in science and technology industries, science and technology degrees as a priority, and finally takes into account the application of the situation is understandable. This is because, in the IT industry but a backward technology can easily lose competitive advantage. However, because of blindly pursuing technology to the neglect of the application, it eventually would be very easy to fall into the "technology of the Red Sea",. And the genuine users of thinking to come to reconsider the design of the products of the time, this is the beginning of the real challenge. At the same time as the upgrading of the applicability may also mean that at the same time to enhance technical and aesthetic.

Yahoo! denied acquisition proposal from Microsoft

February 5th, 2008

Last week Yahoo and Microsoft acquisition, according to the facts known to friends that this case has been Yahoo (Yahoo!) Internal to the , because they consider Yahoo! worth more money.

Reported last Friday in response to the hostile bid was considered the case, Yahoo in the convening of the Board of Trustees, all the analysis and discussion, or decision rejected the marriage. Of which a considerable number of reasons, refused to let Yahoo accept the acquisition, including the related financial information analysis. They said more than 44.6 billion dollars and they also have to consider Internet advertising the possibilities of cooperation with Google, Recent inferior to save, but the question was raised monopoly; It was also noted that MS simply overweight.

Skyfire Mobile Browser

February 1st, 2008

Skyfires is a Windows Mobile device browser, in a view as a PC, and supports almost all the embedded Web format. such as: Youtube and other video content, Facebook, Myspaces fast loading pages, video playback, support for Flash 9, QuickTime, Java, etc. content.

skyfire-mobile

At present, Skyfires still in testing, and we need to go to its official Web site for testing. It’s not known whether the software can support other languages, this is a problem. See video demonstrations and more functional description: http://www.skyfire.com/product

Window Server and SQL data base 2008 deferred

January 26th, 2008

Visual Studio 2008 has been released RTM version at the end of year 2007. Also Windows Server 2008 is expected to release RTM in February of this year, but another 2008 products, SQL Server 2008, has been postponed again, with the original planning date of February. According to the latest news, SQL Server 2008 data mining should be deferred to the third quarter.

According to official sources, SQL Server 2008 will be finished in the "Heroes Happen Here". Then it will be released with completed full-featured version. And RC will be released in the second quarter, and the third quarter for RTM.

Pentax released 14.6Megapixels K20D, wow!!!

January 25th, 2008

Pentax K20D rumors have been spread for a long time. Now finally the news becomes clear, and  there are a number of rumors really compatible with the description.

 
The K20D, a 2.7-inch LCD, supports Live view real-time viewfinder, as well as hand-CCD vibration, dust and improve the mechanism. Not only that, but also have the ability waterproof dust can be used in bad weather. Using SD / SDHC memory card, and PictBidge function. Supplied at 1299.95 dollars. Jump and then fuselage detailed specifications:
[Original link]
1, photographic components:
1, type: CMOS, with anti-Shoudou (up to 4 bands), as well as mechanisms for dust
2, Size: 23.4 x 15.6mm
3, Color Depth: 8 bits / channel JPG, 12 bits / channel RAW
4, pixels: total pixels 15.1 megapixels, effective megapixels 14.6 megapixels.
5, the photographs record size: 4672 x3104 (14.6M), 3872×2592 (10M), 3008×2000 (6M), 1824×1216 (2M)
6, select grades: Premium, Best, Better, Good
Second, the AF system:
1, type: 11:00 SAFOX VIII AF system
2, AF: AF-film continuous AF, Manual
3, the focus adjustment: Auto, users choose, the Centre
4, AF-Assist: Yes, by the built-in flash
Third, viewing window:
1, type: Pentaprism optical viewing window
2, vision coverage: 95%
3, magnification: 0.95 times (50 mm f/1.4 AF infinite circumstances)
4, Screen: Natural-Brite-Matte II
5, refractive adjustment: -2.5 to 1.5
4. LCD:
1, Category: 2.7-inch TFT color LCD, adjustable brightness and color, and real-time preview, the vision of 100% coverage.
2, resolution: about 230,000
3, visual angle: the level of 160 degrees, 160 degrees vertical
5, built-in flash:
1, Category: Support P-TTL.
2, GN value: 13
3, flash mode: open, red-eye reduction, slow sync, Slow sync with red-eye reduction, the curtain sync, wireless
4, exposure compensation: -2 to +1 EV in 1 / 2 grid units.
6, external flash:
Category: Shoe. PENTAX exclusive use of flashing lights, support for the P-TTL, the fastest synchronous shutter up to 1 / 180, and wireless trigger.
7. Storage media:
Category: SD, SDHC
8. Power:
1 Source: rechargeable lithium D-LI50
2, Number of shots: about 740 (if half by flashing lights, and about 530)
3, AC: support, but need to buy.
9. Volumetric Weight:
1, size: 141.5 x 101 x 70 m
2, non-battery weight: 715 g
3, with battery weight: 800 g
10. Language support:
English, French, German, Spanish, Swedish, Dutch, Italian, Russian, Portuguese, Danish, Finnish, Polish, Czech, Hungarian, Turkish, Japanese, Korean, Traditional / SR Chinese.
11. Measurement system:
1, Category: TTL metering Area 16
2, photographic range: EV 0-21 (ISO 100, 50mm f/1.4)
3, Exposure compensation: plus or minus 3 EV in 1 / 2 grid units; plus or minus 2 EV in 1 / 3 unit.
4, Metering mode: 16 district, the central focus, Spot
5, Exposure Lock:
12, ISO value
100-3200, the largest expandable to 6400 (choose to 1,1 / 2,1 / 3 as one of the units)
13, White Balance:
Auto, Daylight, Cloudy, Tungsten Lamp, fluorescent light, flash, manual.
14, the shutter:
1 / 4000 to 30 seconds, the shutter support B
15, dial mode:
Green (automatic), procedures, sensitivity preconditions, Aperture Priority, Shutter Priority, TAV (automatic exposure aperture Shutter Priority), Manual, X Sync (synchronous flashing lights), Bulb, a user-provided
16, color mode:
Bright, natural, portrait, landscape, the bright (primarily the adjustment of image saturation, hue, sharpness and contrast), monochrome
17, shooting mode:
1, a single shooting.
2, Continuous (HI): 3 per second (38 JPG or 14 RAW PEF or 16 RAW DNG)
3, Continuous (LO): 2.3 fps (JPG no restrictions or 14 RAW PEF or 16 RAW DNG)
3, High Speed Continuous: 1.6 megapixels, 20 per second.
4, Pen: 2 or 12 seconds
5, Remote: Yes, 0 seconds, three seconds and continuous.
18, browsing patterns:
1, model options: one, two, indexing (4, 9 or 16), zooming, rotation, the data folder to watch, slide-shows, distribution of information exposure, exposure-secret instructions, RAW to JPG
2, magnification: up to 32 times

After you get this, try moono.com, a nice photo sharing website!

Thinness is not the holy grail.

January 23rd, 2008

The thin laptops always have serious problems:
    1. Impact weak, easily fractured.
    2. Keyboard cannot give good feelings as the physical structure of it.
    3. Data protection and hardware buffer are almost none; volume and safety coefficient is inversely proportional.

MacBook Air is so strange, and I am not sure if it is an attempt.

For the size, comparing to the thinnest laptop is a silly thing because notebook computers are with diagonal design for usability. It is not hard to make "the thinnest", but the focus should be the inside integration circuit. For technology, one year 2002, Panasonic launched the alloy material world’s lightest laptop, R1, without a fan, and supports five hour length of battery life. For the design, Sony introduced a carbon fiber material thinnest laptop X505, just to show the strength of their technology.

Sharp, to raise keyboard percussion for hands, is using the unique ‘elevate physical structure’. Panasonic, to improve impact resistance, is using a shell stamping to boost so that a person can even stand at it.

According to the research on Amazon.com, for usability, laptops cares most is mobility. for example, I wish to have one 12-inch screen, weighs less than 2lb, with the battery capability for over eight hours. In addition to those standards, there are standards for habits and experience: 
    1. Keyboard, IBM is undoubtedly the best.
    2. USB interface expansion should be enough, but three or more will need a power supply, that is, a good motherboard.
    3. No audio output influence sound.
    4. Fan noise, it is best to work without fans, like Panasonic liquid cooling.

In conclusion, Thinness is not the holy grail.


©2007 wwwldailymotion.com. View our Privacy Policy, revised effective 01/12/2007.
Use of this site is subject to the Terms & Conditions which constitutes a agreement between you and this site.