OC one minute not the next???

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Joined
2 Oct 2007
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610
Location
Cardiff
Hi All,

I have managed to my amazement to get my E8600 to 4.4GHz on air with temps at 71c under load. It's not stable for more than 15 minutes @ 1.392v However if I restart the bios defaults to 3.3GHz aftern umerous boot attempts fans running flat out etc. Maybe an hour later it will boot to 4.4GHz. Anyway I went down to 4GHz, which I would be happy with and that is Prime Stable for 8 hours @ 1.375v. Reboot and I cannot OC regardless of what I do or what voltages are used. If I leave it until tomorrow it may OC again.

What should I hit with a hammer first?
 
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