What could be happened?

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Alex78

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Nov 24, 2013
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CPU: i7 4770k
MOB: ASUS maxiimous VI hero
cooler: CM hyper 212x
OS: Windows 8.1 64bit
I over clock just by changing the multiplier and the Vcore on manual (I am a beginner) everything else in bios on auto,
I had my i7 4779k @ 4.2 with 1.13 vcore for several days now and I had tested it with intel burning test on very high and it passed with no problems on max temps 78 79 core temps. what so ever today I wanted to try how much higher I can get from my CPU so I try 4.7 with 1.35v and it booted up to OS then and ran cinibench with good results, But when I started IBT temps go high suddenly 100c so I stopped immediately and decide to go back to my safe cool setting 4.2 @ 1.13v so I load optimised in bios and then change OC to XMP to get my memory profile and multiplier to 42X and vcore manual to 1.13v and evrything else on auto like it was before then I wanted to test it again with intel burn test on my old settings (which is worked before rock sold) , BUT now I am getting BSOD after third pass!! I didn't not change anything else I put back everything like it was but CPU now doesn't like this 1.13 volts for 4.2 any more!! now I give it 1.14v and it passed , So what could be happened ?? is it possible to damage CPU or MOB during testing??
 
Solution
Tom Tancredi
If it wasn't kicking in higher when you went higher settings, yes that be a problem of course, because your temps (as you noted) went high quickly (as they should your forcing more electricity over the same connections, and heat is a byproduct of electricity).
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Tom Tancredi

Tom Tancredi

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May 9, 2013
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It happens when OCing. You have very small increments that may initially work then later not, because you're pushing the hardware passed the 'manufacturer guaranteed working settings'. I would be thankful you didn't damage the CPU if it works with the 1.14v settings fine and well. Some systems are temperamental that way, but again you're pushing past the limits.

DO BE AWARE: OCing all the time shortens the lifespan of the CPU much faster then normal. Most people do low to moderate OC and only kick in when they need / want it (Gaming, running a large program), because they accept the risks, but they don't "over do it". ALWAYS monitor the temps though, this is critical as you see how quickly it can throttle high and go into MeltDown mode.
 
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Alex78

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Nov 24, 2013
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Thank you for replying,
what do you think about 4.2 @ 1.14volt is this is too much?

 
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Tom Tancredi

Tom Tancredi

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May 9, 2013
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If it wasn't kicking in higher when you went higher settings, yes that be a problem of course, because your temps (as you noted) went high quickly (as they should your forcing more electricity over the same connections, and heat is a byproduct of electricity).
 
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Solution
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Alex78

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Nov 24, 2013
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Thank GOD now everything become like it was, I test it with turbo profile and everything is fine, Thank you.
 
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