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Technology Stocks : Advanced Micro Devices - Moderated (AMD)
AMD 207.67+2.2%Jan 12 3:59 PM EST
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To: fastpathguru who wrote (264330)8/14/2010 6:10:26 PM
From: pgerassiRead Replies (3) of 275872
 
That is with use of a dedicated graphics chip, the VR540X. That shows nothing on how ARM does using software render. The triangle set up rate for the VR540X is just 90 million triangles per second. FYI, the 890GX, one generation back of Ontario (DX10.1 vs DX11), does 2.8 billion triangles per second about 32 times faster. Of course to use this high power, tessellation needs to be used given the HT link speeds.

Its likely though that the APU on Ontario would be like the Mobility 5430 GPU (Cedar with 80SPs) which has a TDP of 7W and has a triangle rate of 4.4 billion triangles per second some 48 times higher than the VR540X. That assumes a core clock of 550MHz. I think it will be somewhat higher at either 600 or 800MHz, using a multiplier off the 200MHz base clock and which allows either a 200MHz or even a 100MHz clock during slow periods.

LLano of course will be much faster using 480SPs. Using the Mobility 5650 as a starting point, either at 600MHz or 800MHz, the setup rate is 14.4 or 19.2 billion triangles per second at a TDP of 20 or 25W. Of course that is using TSMCs 40nm non HK/MG process and Llano will be on GFs 32nm HK/MG process so figure about half to a third of that or 8-10W TDP. Overclockers, if allowed, would use either a 5 or 6 multiplier (1-1.2GHz) for a 24-28.8 billion triangles per second and double TDP to 16-20W. 1.2GHz on 480SPs would be like 800MHz on a Radeon HD 5750 discrete GPU (720SPs). That is enough for good gaming use at 1920x1080 at high settings on all but the most demanding of current games.

Pete
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