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To: eracer who wrote (255315)	8/6/2008 6:11:32 PM
From: pgerassi	Read Replies (2) \| Respond to of 275872

Eracer: 8 core Larrabee may be faster than 790GX, but Larrabee is a 2010 product while 790GX has just launched. 2 years ago the comparable ATI IGP was the Radeon X1250. It has about 1/10th the performance of the 790GX. Assuming that the same performance leap will occur in the next two years, Larrabee will have to deal with an ATI IGP that is 10 times the performance of the current 790GX. That is about half of what the 4870 does. That is also about where a 64 core Larrabee would be at 1GHz. Using _mas's estimate of 65W for a 30 core 1GHz Larrabee sans memory controller or PCIe interface, a 64 core Larrabee would use about 160W about what a 4870 does at 750MHz including the memory, fan and other board circuitry. At the board level look for 64 core Larrabee to use 200W and cost $100 for the GPU alone. To have that matched or beaten by a 10-20W $30 IGP would show how uncompetitive Larrabee would be. It would though show what the chart does, great scalability from 8 to 32 cores, but nearly unusable performance for the games coming out in 2010 over that range. Of course as Larrabee firms up over the next two years, those estimates can be far off in either direction. Pete