I have been running my i5 2500k at 4.5 GHZ for about half a year and recentlly its been more unstable it cant cope with the intel burn test running at anything more than standard and it goes to the lows 70 degrees even though I have a very good cooler to overclock I followed this guide my motherbourd is a slighty different model its a gigabyte P67A-D3-B3 the only difference is that instead of having a Vcore voltage setting I have a Dynamic Vcore offset which I have always kept to auto and it has been fine, should I set this manually? I also upgraded my memory recentally to kingston Blu hyper x 8gb could that have something to do with it? How can I get it more stable and cooler?
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if you have upgraded your memory (more sticks) try increasing the voltage for stability
try to manually set the vcore to 1.33v.. how much volts is the auto vcore setting?