A little more information on your hardware and settings might be helpfull here. I'll take a shot with the little information supplied.. The only thing you changed was your ram. Did you make sure the Vdimm and timings are set to OCZs specifications for the ram, or did you let the MB default the settings? Suggested settings and MB default are often different. Example..Crucial says 2.1V Vdimm on my ram, Biostar defaults them to 1.9V. They will run there, but if I want to have them perform well, I must manually set the Vdimm to 2.1V.