Has anyone had to raise the voltage on these? It used to run fine at 1.8v at 266-280 bus speed but now 1.8-1.9v get me bsod. I'm having to run them at 2.2v right now since even 2.1v crashed firefox and gave me a 0xc0000005 error in L4D2. I'm 90% sure it's my motherboard at fault it's given me nothing but .