problems running 803x GPU WU's (may be DirectX 10 related)

[bollix47]

They all failed prior to increasing the fan speed.

There seem to be a number of problems with the fan profile not increasing the fan speed enough when the GPU is used heavily.

That's been my experience. I've always had to up the fan speed manually using MSIAfterburner.

[chaosdsm]

They all failed prior to increasing the fan speed.

There seem to be a number of problems with the fan profile not increasing the fan speed enough when the GPU is used heavily.

Hm... I wonder if that's why I have so few problems with my GPU, I've always set it manually to 100% fan speed

In direct relation to my Original Post, problem fixed.... All it took was installing Windows 8 Customer Preview edition. Since it works in a beta OS with drivers designed for Windows 7 64bit, I have to wonder if there was something wrong with my Windows 7 Pro 64bitInstall. I did notice one thing about my Win7 installation, it had DX10 installed (I erased the partitions & started fresh for Win8) where my Win 8 C.P. has DX11, so there's a real possibility as to a culprit...

When I go back to Win 7 in a couple of weeks, I'll be sure to go with DX10 at the start & see if the problem returns, if it does, then I'll move up to DX11 & see if it persists.

[bruce]

FAH does not use DirectX, though it's possible that MS or AMD decided that some part of the supporting files would be shared with other GPU support code.

[chaosdsm]

FAH does not use DirectX, though it's possible that MS or AMD decided that some part of the supporting files would be shared with other GPU support code.

FAH doesn't necessarily have to, Aero uses DX, as does video hardware acceleration in certain applications including Internet Explorer, potentially leading to a conflict for GPU resources.

[Michael_McCord,_M.D.]

Yes, for some reason EVGA's Precision only allows the GTX 460 card to go to 70% fan speed, which seems dumb.

[rhavern]

Yes, for some reason EVGA's Precision only allows the GTX 460 card to go to 70% fan speed, which seems dumb.

That is due to a limitation in the GPU BIOS, which always made me wonder "why?" I had an EVGA GTX460 that had a "performance" upgrade for it, which was a BIOS update that allowed 100% fan usage. That was the only change as far as I could tell.

Some vendors that sold OC versions that also removed the 70% limit. Looking at my equipment list, I've had nine GTX460s and I recall about 3 or 4 that could do 100% fan, all the rest 70%. I had to keep that in mind when building triple-GPU boxes. Typically I had to add a ghetto fan mod on the side to move the air in between the cards. YMMV.