That's what I used before, somehow it automatically installed or something, lol. Probably from all the times my system froze during stress testing. Anyways, currently stable 13.5x300 4.05GHz / 2.7GHz 1.424vcore (fluctuates to 1.44v sometimes)......why do I get the feeling my G. Skill Ecos aren't that great (swapped back my OCZ Gold DDR3s back in)