Originally Posted by legojon
Rage was a bad example ... kind of. I noticed in 3D settings, Rage is actually locked to Single GPU for me anyway! The problem I have is, it chooses GPU2 not GPU1. When it did choose GPU1 I got 60fps solid. But now its choosing GPU2 and I get 20fps.
But, more to the point. This morning I ran Metro 2033 benchmark. I got 22fps on High. That was using GPU1 30% and GPU2 98%. So, I swapped the cards over in the slots. Ran the benchmark again and got 46fps GPU1 98%, GPU2 78%. So everything is running great again.
So my problem is everything will be great for a few days. Then I'll have to open the case and swap the cards over in the slots again. I have no idea why this happens and whether its a HyperSli thing, a crossfire issue (because when I google it, this happens with Crossfire more than SLI it seems and it is a crossfire board). Or are the Nvidia drivers just useless at picking out the primary GPU?
Right... Rage is a non SLI game, better kombustor to see if it works.