So I overclocked my Intel Core 2 Quad Q6600 to 3.0GHz @ 1333MHz for the first time, but it doesn't seem stable. I was able to boot into Windows and all, but after about an hour and a half of running my system, it would just freeze. I basically just left all the settings either on Auto or Disabled. Should I increase the Vcore voltage, and if so what should I set it to? Right now at stock it's at 1.200 volts.