DX11 Goes Mobile

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AMD predstavio Mobility Radeone 5800, 5700 i 5400 serija:

AMD currently has the three most powerful graphics cards on the market, plus several highly-competitive offerings in its mid-range lineup; all are DirectX 11-capable. Now, the company is upping the ante against arch-rival Nvidia with its announcement of mobile DirectX 11 GPUs. Let’s take a quick look at the speeds and feeds.

Mobility Radeon HD 5800-Series
Transistor Count: 1.04 billion
Stream Processors: 800
Video Memory: 1GB GDDR5/3 (or DDR3)

Mobility Radeon HD 5700-Series
Transistor Count: 626 million
Stream Processors: 400
Video Memory: 512MB / 1GB GDDR5/3 (or DDR3)

Mobility Radeon HD 5400-Series
Transistor Count: 242 million
Stream Processors: 80
Video Memory: 256MB/512MB/1GB GDDR5/3 (or DDR3/2)


The overall thermal envelopes and actual clock rates will vary, depending on model number. In other words, a Mobility Radeon HD 5870 will have the same base feature set as a Mobility Radeon HD 5850, but with different core and memory clocks.

The first two things you might notice are the shader units and transistor counts. As with earlier AMD mobile GPUs (and Nvidia's lineup as well), AMD’s product numbering scheme leaves something to be desired. The company feels that the “5800” moniker means it’s the fastest in its class. So, the fact that a Mobility Radeon HD 5870 will have half the shader units of a desktop-class Radeon HD 5870 isn’t relevant, according to the company's marketing department. I’ve personally heard different from users who are confused by the product numbering scheme, expecting similar feature sets for similar product numbers (Ed.: and the rest of us here at Tom's Hardware are also fairly frustrated with both vendors' mobile naming). A good rule of thumb: “Mobility” means “desktop minus one.” So, the feature set of the Mobility Radeon 5870 is roughly on par with the desktop Radeon HD 5770.

Product numbering aside, it’s likely that AMD’s GPUs will mop the floor with current Nvidia offerings. The company has already roared back in market share, surpassing 50% in the discrete GPU segment over the past few months. Its DirectX 11 lineup will likely widen the lead. In fact, AMD and Nvidia are practically neighbors on the show floor; AMD has the bigger booth.

http://www.tomshardware.com/reviews/...mi,2527-2.html