Quote Originally Posted by lowfat View Post
Ya it seems I have stumped upon a problem that many others have been having. For folding@home you want to run w/ NUMA disabled as we get a significant decrease in the time it takes to press a frame. So naturally I run w/ NUMA disabled. But when I bought a second HD6950 it wouldn't boot with NUMA disabled. No matter what clockspeeds/voltages I tried. It seems other people on [h] have had issues w/ disabling NUMA but didn't know that the second videocard they had was preventing it. However there are people running 3/4 videocards but not having this problem.

In other news, my E5645 SR-2 system is being a . On their own each CPU is stable. If I enable both CPUs it is completely unstable. Please don't tell me I need to RMA another one of these boards.
I've tested my CPUs on a UD7, and both where doing slightly better. I can't get the same with both on SR-2. So I've noticed something similar. I've never tried to push each by itself on SR-2 tho. Both together won't go further anyways.

This may be a normal behavior when 2 CPUs communicate, but it may also be a weakness in current BOIS too. I don't think changing MB would help, but you won't know before trying.