I overclocked my i7-2600k to 4.5ghz, 1.375vcore. I see other peoples sigs with alot lower vcore with similar overclocks on i5/i7 sandybridge and just wondering is there something i missed or a setting in bios that might allow my overclock to remain stable at a lower voltage? I'm running on air atm, prolimatech supermega with 2 scythe slipstreams in push/pull. 1.375 was the lowest i could get it and be able to run prime95 all night, my machine runs awesome and haven't had any bsods or anything but it is a little warm at times. 37-45 across cores idle and hits 66-70 on load, other factor is I'm in australia with no air-con coming into summer, the other day we had a really hot day and my cpu hit 79degrees.