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AMD RD790 naked shot (Source: HKEPC)
RD790 to gain triple and quad CrossFire capabilities

AMD is preparing to update its aging 580X chipset later this year with the upcoming RD790. The upcoming RD790 serves double duty as the single and dual processor platform of choice for AMD desktop products. RD790 introduces 41 PCIe 2.0 lanes to AMD’s Socket AM2+ platform for Stars-family processors.

Motherboard manufacturers can distribute the PCIe lanes in many configurations, including four PCIe 2.0 x16 slots with eight-lane signaling. With all 41 PCIe 2.0 lanes, the RD790 chipset has a TDP up to 10-watts. AMD roadmaps reveal the multiple PCIe 2.0 slots are used for an improved CrossFire multi-GPU technology. The improved CrossFire multi-GPU technology supports up to four ATI Radeon HD 2900 XT graphics cards in Quad CrossFire configurations.

Unlike NVIDIA’s SLI, which supports dual or quad graphics cards in SLI, the improved CrossFire solution can take on three cards for improved performance. AMD claims CrossFire scaling with three cards yields a 2.6x performance increase. Two cards in CrossFire yield a 1.8x performance improvement. AMD roadmaps do not divulge how well CrossFire scales with four GPUs.

Expect RD790 to arrive later this year in time for the AMD Phenom product launch in single and dual processor configurations.


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Quad 2900XT?
By Verran on 7/10/2007 1:15:49 PM , Rating: 3
4x2900XT? That's 1000 Watts of power consumption just for video, and that doesn't even figure in overclocking!

I guess it would be fun to dim every light on your block, though...




RE: Quad 2900XT?
By VooDooAddict on 7/10/2007 6:45:32 PM , Rating: 2
Don't forget that a 4x2900XT user might also go for a dual CPU slot solution ... with dual QUAD cores. Gives AMD an 8 CPU x 4 GPU solution.

If the Electric wasn't already stretched ... I think the electric company should give out these monsters just like cell phone providers give out free phones :)


RE: Quad 2900XT?
By z3R0C00L on 7/11/2007 8:34:29 AM , Rating: 2
That's not 1,000watts more like a little under 800Watts.


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