Ive never had any problems with Mushkin they over clock well and are the top of the line memory IMO, Support is outstanding just a phone call away with no waiting on hold. they will help you Oc if you have problems, I find it stable at 2.0-2.1 v i have my 1066 oc to 1162 atm. wow the price has dropped 10 bucks I guess its time to order another set.