Originally Posted by nckid4u
I have done the same with my 2600k. Ran both ways and find myself better off running -smp than -smp 7 with affinity set to run both gpus on the unused core. I am glad somebody else has had the same experience. I posted this in another thread and got jumped on!
I've started to notice the same thing as well. I only have 1 rig working full time right now with a gpu3 client(waiting on some parts for the next ones) and have been doing a lot of experimenting with it. i7 2600k @ 4.9ghz makes more points than the hit I take on my 570 folding while -smp 8. All my other rigs won't even gpu fold (since they're going to all be ubuntu most likely--unless something changes soon).