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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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RE: Yay!
By AsicsNow on 7/10/2007 1:22:57 PM , Rating: 1
haha no kidding. People who have that kinda money to afford 4 cards are probably not too worried about the powerbill anyways though. They probably also have another PC or two to run 24/7 for tasks such as torrents and local servers, etc. if they do care though.

Do they even make power supplies that powerful though? I wonder if enthusiast cases will start comming with room for two power supplies in the near future ;) j/k


RE: Yay!
By Kiwi on 7/10/2007 1:47:00 PM , Rating: 1
One or two of the PSU makers already produce 5 1/4" Optical Bay sized secondary power supplies specifically for Crossfire /SLI situations. They will have to upgrade them from their current 300 watts +/- output ratings, though.


RE: Yay!
By Lightning III on 7/10/2007 2:02:20 PM , Rating: 2
PLEASE

by the time it's actually on the street ATI should have the 65nm die shrink down and will probably release it as the 2950 xt or xtx and all four will draw less power than 2 gtx's

or I'm sure its a hope

and is that a 10 watt TDP for the chipset the 680i is 24 watt TDP that is just about a third the tdp of latest nividia heatbeast chipset although it looks like the new halo heatbeast will be intel's X38 35 watt TDP

well here's to ATI who consistently produces the coolest running enthusiest chipsets

or suitable for later HTPC use once the upgrade cycle has moved on


RE: Yay!
By Anh Huynh on 7/10/2007 2:17:43 PM , Rating: 1
You can't really compare the X38 and 680i to the RD790 for power consumption. The RD790 doesn't have a memory controller onboard.


RE: Yay!
By Le Québécois on 7/10/2007 2:54:03 PM , Rating: 4
Ok, but does this mean that you can't compare AMD CPU TDP to Intel CPU TDP because AMD does have their memory controller inside their CPU?

Just a honest question here, no sarcasm intended.


RE: Yay!
By vignyan on 7/11/2007 1:56:53 AM , Rating: 1
Well i honestly think that it must be the power consumption of the CPU+chipset that need to be compared as these chips are interdependent.


RE: Yay!
By Lightning III on 7/10/2007 3:21:15 PM , Rating: 2
it holds true across the board look at the

DFI LANParty UT ICFX3200-T2R

quote:
RD600 has slightly higher idle consumption numbers than the Intel 975X but consumes about 12% less power under load than the Intel board and 26% less than the ASUS 680i. Although the 680i consumes about 32% more power at idle than the RD600


or if you prefer

the 6100, 6150,7050

compared to the 690G wich runs cooler and is the only IGP chipset that will handle vista ultimate and generate's less heat at that

but my all time favorite is the computex firing squad invatational

http://www.firingsquad.com/features/firingsquad_in...

where Nvidia got the total beat down by ATI (all products in development prior to merger )

or the falcon northwest blog actually I think they won twice and nobody noticed

http://www.dailytech.com/article.aspx?newsid=7864


RE: Yay!
By tuteja1986 on 7/10/2007 11:34:47 PM , Rating: 2
I have a DFI RD600 .. it had alot of problem but all the major problems have been fixed in the latest revision. Also DFI is still doing bios updates which is making the board even better and more stable. All you need to do is buy a extra cooling for north/south bridge to make it become a overclocking beast. It overclocks better than my Asus 680i Striker. Also best Quad core overclocking board i have seen yet.


RE: Yay!
By z3R0C00L on 7/11/2007 8:30:58 AM , Rating: 2
Who cares if ATi produces the coolest running chipsets... and who cares about nVIDIA chipsets. Unless you're running an AMD processor based system then there's no need to buy either.

Intel Chipsets are the single best platform that exists. The x38 aims to add both SLI and X-Fire to it's feature support list all the while maintaining Intel's stability and overclocking prowess.

This coming from a guy with both a 680i and P35 platform.


"We can't expect users to use common sense. That would eliminate the need for all sorts of legislation, committees, oversight and lawyers." -- Christopher Jennings

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