Computer won't start upon overclocking 4670k

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Coltron

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Jun 27, 2013
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Hi there. I recently attempted overclocking my 4670k. It is by default clocked at 3.4GHz and can reach up to 3.8GHz on those default settings at 1.154V.

I tried to bump the overclock up so that it would always be at 3.8GHz. I left the voltage alone and left the RAM overclock to auto, so it got overclocked higher as the CPU was.

When I exited UEFI/BIOS the computer turned off, turned back on by itself for about 5 seconds (with no response or anything on my screen, and then turned itself off and continued to repeat that until I manually turned it off.

So technically speaking, the CPU OC wouldn't be the problem right? After all, it was already at that voltage at that clock, so why wouldn't it be a stable OC?
 
Solution
Tabris DarkPeace
I wouldn't raise the voltage by more than +25%, and I would only suggest doing this for a brief Prime95 run to check if it's stable.
You shouldn't need to crank it by +25% and you can increment it step by step once booting is stable.

If it wont boot reset the CMOS jumper on the motherboard.
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rolli59

rolli59

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Oct 27, 2007
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It is hard to say but did you do this only on raising the multiplier? If so most likely it would need voltage boost.
 
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Coltron

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Jun 27, 2013
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There's an automatic function in UEFI where depending on what end result you're trying to achieve, it will choose what multiplier/core clock speed combination that you will have. I just left it on that as Im new to OC'ing.
I'll definitely try that out though. By voltage boost, how much of a boost are we talking about? :p
 
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bryonhowley

bryonhowley

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Oct 24, 2011
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Try bumping your multiplier up but leave your ram at the default. So if your ram is rated at 1600 set your ram at 1600. It could be that your ram just can't handle being OC'ed.

For instance on my i5 3570K I have my multiplier set at 41 and changed my ram back to the default of 1600 instead of auto.
 
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Tabris DarkPeace

Tabris DarkPeace

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Jul 3, 2013
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I wouldn't raise the voltage by more than +25%, and I would only suggest doing this for a brief Prime95 run to check if it's stable.
You shouldn't need to crank it by +25% and you can increment it step by step once booting is stable.

If it wont boot reset the CMOS jumper on the motherboard.
 
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