SLI and dual monitors

[djmorgan]

My first time so Hello!

I have been trying to find an answer to this question but maybe here I'll get lucky! I have 2 GTX460s' in SLI running to 2 monitors my drivers are version 260.99.

When in SLI the master card, slot 1 always runs Mem clock at 3D (max) with clock and shader at 2D, none of these throttle back when doing nothing, of course this makes GPU0 hotter than GPU1 by about 19c which is more annoying than critical.

If I disable SLI the GPU0 throttles to a difference of about 3c between cards, MSI Cyclones don't have shrouds so for the most part vent into the case.

I've swapped the cards arround with no improvement, both cards are clocked the same, I just think they should both throttle back when idle as they do when not in SLI and can't see why one card runs faster when in SLI with no work to do.

The saving grace for this is that when in a game SLI runs great and both GPUs' don't work as hard as a single GPU.

Thanks for your time

David

 

[Yukikaze]

My first time so Hello!

I have been trying to find an answer to this question but maybe here I'll get lucky! I have 2 GTX460s' in SLI running to 2 monitors my drivers are version 260.99.

When in SLI the master card, slot 1 always runs Mem clock at 3D (max) with clock and shader at 2D, none of these throttle back when doing nothing, of course this makes GPU0 hotter than GPU1 by about 19c which is more annoying than critical.

If I disable SLI the GPU0 throttles to a difference of about 3c between cards, MSI Cyclones don't have shrouds so for the most part vent into the case.

I've swapped the cards arround with no improvement, both cards are clocked the same, I just think they should both throttle back when idle as they do when not in SLI and can't see why one card runs faster when in SLI with no work to do.

The saving grace for this is that when in a game SLI runs great and both GPUs' don't work as hard as a single GPU.

Thanks for your time

David

I have had the exact same problem with my GTX285 SLI setup, and now with my GTX470 SLI setup. This is a driver issue, and as far as I know nVidia has been aware of it for over a year. I think it is safe to say they do not care about it and do not intend to devote resources to fix it.