I have 2 295 gtx's and was wondering if quad sli was supported?

Unless SLI is disabled (regardless of version), the GPUGRID application will execute on only one GPU. As I understand it, this is not a limitation of the GPUGRID app., but a more general restriction in CUDA (at least until NVIDIA addresses it).

Yes, SLI has to be disabled for several chips to be recognized. It's a limitation of the current CUDA drivers. 3 of your 4 GPUs should work, but the detection and utilization of the 4th one has recently been troublesome for some people.

MrS

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Scanning for our furry friends since Jan 2002

I was worried about this 3 of 4 only thing myself and must say not a spot of bother. Dropped the second card in and doubled my processing. I guess that ones been solved.

Edit: You can use the Quad SLI cable (i do) but disable SLI in control panel for crunching. Then you can still enable to play games. thats what ive done.

Thanks for responses fellas. Disable sli and use 3 cores. Got it thanks.

Well, it *should* use all 4 GPUs and currently there's no way to intentionally limit this number to 3 or 2. The comment about 3 of 4 was just to tell you there might be problems, but they don't affect everyone.

MrS

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Scanning for our furry friends since Jan 2002