Sooooooooo I completely forgot to test my replacement 2500k from Intel when I RMA'd my last one a couple of months ago and have just been running the same settings for OC as the last one, which for an i5 needed a lot of voltage for 4.5GHZ (1.36-1.38) well I just found out this chip will do 4.5 at .05v less and am running 4.7GHZ at the same voltage as the previous, might push my luck and aim for 4.8/4.9 with the same voltage too