Hey, This thread is extending on my previous thread about my i7 heat and voltage issues... I'm having trouble getting my computer stable at 4.2ghz... Let me start by saying that I confirmed with my friends and others that I have an average batch (which btw is 3939c166), I also have really cheap value RAM from Kingston (1333mhz 9-9-9-24). I will list my basic settings, Bclk is at 200, Vcore is at 1.35v,RAM is running at 1200mhz 7-7-7-18 t1, RAM volts are 1.54 (voltage increments on the ud3r are horrible). Ucore is at 3.6ghz. QPI /VTT voltage is at 1.41v Thanks in advanced for your help.