The motherboard is a p5n32 e sli, it must be holding it back.Running 3150mhz at 1.45V stable, 40C max full load, will not boot 1mhz higher on any vcore.Tried up to 1,7V with 1 stick of ram.This mb will run my e6600 to 4G stable and post to 4.2G over 450fsb but I think my raid goes bad after that as it will not boot.