The difference between a card of computer graphics card and N card

A lot of friends to assemble a computer to choose graphics card above feel confused, in the end is the choice of a card or n card, and a card and n card and what is the difference? Here Computer Knowledge Learning Network Small series to give everybody popularize this knowledge.

A card refers to ATI, a graphics card manufacturer, but ATI was acquired by AMD, we also called a card AMD video card, so in the latest graphics ladder map above is the AMD graphics card.

n card refers to Nvidia, another graphics manufacturer. Nvidia's most famous product line is the GeForce Display card series for the game. So what is the difference between graphics card A and N card? Small series after testing and collection, from a variety of detailed comparison. (For ease of understanding, no professional details)

From the processing capacity to compare the advantages and disadvantages of the two graphics card:

1, N card advantages and the disadvantage of a card

Each stream processor in the N-card GPU has a complete alu (arithmetic logic unit) function, Each stream processor works well when an action instruction is issued. The 5 flow-processing units of each stream processor in a card's GPU are fixed, can not disassemble the reorganization, if in the processing of pure 4D instructions, each flow processor can only handle a 4D instruction, there is a stream processor unit idle, but can not join other combinations to work together.

Simply put, when a command task is distributed, N-card GPU requires 1 "people" work independently to complete. And a card's GPU requires 5 "people". In order to complete the work of the team ATI although more, but the 5 "people" There may be 4 "people" Idle, because these 4 "people" does not have an independent full Alu function, can not perform function operations, floating-point operations and multipy operations.

2, n card disadvantage and the advantage of a card

ATI's design also has its remarkable characteristic--the floating-point computation ability is formidable. In other words, if the ability to display the core in the floating-point operation, perhaps ATI is stronger, in the current GPGPU (General graphics processor) Project applications more scientific calculation, theoretically adaptable to the GPU and CPU melting table trend.

From cost-effective: A card will be more cost-effective. 2012 years ago a card in the audio-visual and graphic design will be better than n card. and n card in the game performance aspect is wins. Of course, for our general computer users (not the pursuit of professional), the two graphics cards in fact, the difference is not so big.

From the game perspective: It is recommended to select N cards (2012 ago) because most games are optimized for n cards only. There is a saying, play games, n card sturdy, a card color gorgeous; N card is like a male sex, a card is like a female prostitute. But this sentence is many years ago, the previous a card driver is not perfect, leading to weak performance in the game, now the situation has been greatly improved.

These two kinds of view from the design to see High-definition and play the game to choose the corresponding graphics card is left behind, which now most people still think so. In fact, the latest n card and a card difference in the game performance is the pros and cons, in most game tests are each other, evenly.

3, a card and n card which is good?

Each has its own characteristics to see what it needs.

A card is an AMD graphics card, n card is Nvidia's graphics card.

Generally do more professional graphic design with a card, a card color is good, n card relatively no a card color good, but the game is better, the same level of graphics card a card software running better than n card, the difference will not be too big, slightly higher, but the performance of the game N card has physical acceleration, n card will be more than a card performance, n Card drive Mature, for the game this piece is very important, a card driver, for the game here is prone to problems, so like the game, most people will choose N Card, stability is better, if you are a hardware master know how to deploy these things, a card n card for you are all the same, know their needs, If it is small white on the proposal directly on the N card, what all the same play on it.

Overall n card and a card although the architecture is different, but in order to be compatible with all kinds of hardware and software, are followed a certain standard for design, so in the performance of the implementation are the same. and stand-alone game manufacturers each of the launch of a masterpiece, is a milestone in the publicity effect, the support of single game manufacturers have become two battleground, so we often in a single game in turn to see two brand signs. This phenomenon has led to a considerable number of beginners into a misunderstanding: who supports more games, whose video card is good. In fact, the fact is not so simple, every vendor to sell the game in the eyes of always only the number of players, not stupid enough to give up another family for one, so even if the claim for a card optimization game, will give another card to leave a considerable degree of the posterior, so in most game tests even if the two graphics cards win and win, the gap is not big.

The last triple small series like a card, the reason is that the performance ratio and in the video card firefight, a card performance is better than n card (only small series of their own tested a few a card and N card performance).