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New i5 2500k overclock What is my next step?

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Ok now, At 4.9 I ran Prime Blend for 2 hrs. I have my voltage in my bios set to 1.425 V (display in cpuz shows a max voltage of 1.464v, but most often under load it shows 1.444v in cpuz)
(When bios was set to 1.410v , it failed in prime.)

I will try to lower my voltage to below 1.425 but higher than the 1.410v it failed at and check for stable.

My max temp spike was 89C , but 99% of the time it was 78-82C.
Idle is below 40C

What might be some advice for further tweaking (beside trying to bring the voltage down a little) , or trying to get higher than 4.9?

OR based on my voltage and temps, would you recommend I don't go any higher?
 
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Ok thanks,
I now see how LLC effects voltage. When have my LLC at 75% my voltage under load is very close to my bios set 1.4v. When I had it at 50% my voltage was quite a bit lower than bios set 1.4, and LLC at 100% my voltage went high above 1.4v.

So, to find a stable OC for 24x7, is having my LLC at 75% and my voltage set to 1.4v a good plan?
 
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What you want from the LLC is to have it keep the voltage as close to the Set Cpu voltage in the BIOS under load. It may take a bit of trial and error to do so because every board and even BIOS for the board is different.
 
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