I buyed a new kit of RAM, a pair of 2X2GB A-Data Vitesta Extreme 1066+ The RAM's sticker says that It can run at 800MHz with 4-4-4-12 timings and at 1066 with 5-5-5-15 timins, both at 2.3v max. I'm willing to OC it to 1200MHz or 1170MHz at 5-5-5-15 (and auto timmings) at 2.3v, but with no succes. are anyone of you guys tested a kit like these???? is this kit didn't suited to achieve 1200MHz or am I doing something wrong???