I'm curious to find out if the 4 GPU support of the 4, 16x PCIe 2.0 slots on this board includes the use of 2-chip cards. The GeForce GTX 295 claims to support Quad-SLI.

I'm going to see if I can get one set up at work. Supermicro does have a barebones config with a very nice case and a 1400 Watt PS.

I'm sure it will do quad-SLI, but it sure ain't gonna do octo-SLI.

Oh, I see. When nVidia says, "Quad SLI", they mean dual, dual GPU boards. As up until now there's not been motherboards with 4, 16x PCIe slots.

But their SLI 2.0 spec does support 8+ GPUs. Wish I could find out if someone has tried this yet.

EDIT: Anyway, it doesn't matter for what I want to do. I'm looking for video compression using CUDA, not SLI for gaming. CUDA is fully supported on as many GPUs as you can get into a machine (found a mention of 12, and actual implementations of 8 GPUs: http://estoniadonates.wordpress.com/our-supercomputer/ ).

Oh, there's definitely been boards out there--just not ones that would take 4 dual slot cards... Several of the high end X58 boards have 4 x16 slots (admittedly not electrical, but at least x8 for each).

See my edit above, if you haven't yet. But yeah, this board has enough room for dual-slot cards, and as the specs say: 4 PCI-e 2.0 x16, 2 PCI-e 2.0 x4 (in x8 slot), & 1 PCI slot (The x4 and old PCI get covered up when using 4 dual-slot cards though.)

Now it makes sense! Hell, I don't know if there's a limit on CUDA.

Theoretically, I would guess that you can wedge 6 x16 slots on a board; probably not at x16 bandwidth or anything close, and you'd have to have water cooling or something, but it should work.

Gawd, you guys are inspiring.

Or scary. I can't decide.

Just have another beer Tom. Then after five or six, Google a tech blog and start randomly quoting it. That's what i do on audio forums.

Wait. What? Which forum am I on? DOH!!!!

Just showed up on a tech news site yesterday, a 13-GPU system: http://www.dvhardware.net/articles25_fastra_2_desktop_supercomputer.html

13, tis bad luck. I would keep an eye on that system.