What are the technologies of ATI s dual graphics cards and N card dual graphics cards? The N card se

Of course, now ATI has Cross Fire X, which means 4 graphics cards can be exchanged together, and N cards can now be handed over up to 3 faster.

NVIDIA's SLI works by dividing an image into two parts, each rendered independently, and uses its own dynamic load balancing algorithm to distribute the task to two graphics cards, and it is worth mentioning that the workload of these two graphics cards is not completely evenly distributed, and the working principle of SLI and Cross Fire is also very similar, but Cross Fire gives us a more flexible way of working. First of all, users don't have to buy two identical graphics cards, as long as the display core is the same, different brands, different video memory, and different pipeline numbers can be easily interconnected. Secondly, it provides users with stronger hardware and software compatibility, and it supports thousands of games and software that SLI can only support a small part of.

Thirdly, Cross Fire provides users with up to three rendering modes to suit different applications: Alternate Frame Rendeing, Scissor, and Super Tilling.

Although the technology of Cross Fire is advanced, the conditions for achieving this technology are still relatively demanding. Users are required to have a Cross Fire Ready certified motherboard, and currently only the RD 400 and RD480 of the XPRESS 200 from ATI are available. In addition, users need to have a Cross Fire Edition graphics card with a built-in Cross Fire Compositing Engine chip, which is currently only available in the X800 and X850 series, and it is quite more expensive than the regular version. Pairing it with another Cross Fire Ready card allows two graphics cards to work at the same time, which is much more cumbersome than using SLI.

Yes. ATI is Crossfire, Crossfire NVIDIA is SLI

As long as the motherboard supports it, it's fine.

The motherboard either supports SLI or Cross Fire, and it will not support both at the same time.

The "sp" in the graphics card means: streaming processor [noun] translated into Chinese means "stream processor".

NVIDIA pursues a "big core" strategy, and a large number of 1D units are used inside the GPU, which can theoretically reach 100% in terms of execution efficiency, and in practice, the efficiency can also be maintained at about 90%, which is very high. However, the design of the large core is very complex, and at the same time, it also puts forward high requirements for the production process, the number of internally integrated SPs is not too large (compared to the "small core"), and the cost and power consumption are relatively high. In addition, a very interesting feature of NVIDIA graphics cards is that the frequency of the stream processor is about twice the core frequency, which is to output graphics information faster with a limited number of SP units.

AMD pursues a "small core" strategy, using VILW5 or VILW4 design, 4D+1D design and 4D design respectively. In this way, more SPUs can be packed at a smaller transistor cost and with a smaller core area, winning by the number of SP cells. However, one of the major problems restricting the "small cores" is the utilization of the SPU.

Once the graphics information entering the GPU is in the form of non-standard data such as 1D or 3D, the execution efficiency of the AMD graphics card will be greatly reduced, theoretically, the efficiency can be reduced to 25% or even 20%, which means that a large number of SPUs are enjoying leisure. However, as long as the data is in standard 4D or 2D, AMD graphics cards can show excellent performance with the advantage of the number of SPUs.

1 SP unit for NVIDIA = 5 stream processors for ATI graphics card.

The bit width of the video memory refers to the number of bits of data that can be transmitted by the memory in a clock cycle, and the larger the number of bits, the larger the amount of data that can be transmitted at the moment, which is one of the important parameters of the video memory. The higher the memory bit width, the better the natural performance**, and the basic mainstream graphics cards basically use 128-bit video memory bit width, and 256-bit wide video memory is more used in high-end graphics cards.

Relatively speaking, I like ati's performance is relatively strong, the larger the video memory bit, the better, and the speed of the video memory, the smaller the number, the better, and the video memory generally uses DDR3 DDR5 DDR2, the sex is far from the same, the video memory is not as good as the actual one, for example, the colorful GT430 1G actual video memory is only 499 yuan, which is good.

The stream processors of A cards and N cards are not the same. There are a lot of stream processors on A card, and there is a perception that when the ratio of stream processors of A card and N card is 1:, their performance will be about the same, but if it is greater than this ratio, N card performance is stronger, and less than this ratio means that A card is stronger.

The above view is a general view, but also depends on such as bandwidth, video memory, etc.).