What voltage should I gun for for 8086K/8700K at 5GHz all cores?

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Gaidax

Gaidax

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Sep 27, 2013
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Sup,

So I am going for an upgrade and I'm rigging myself with I7-8086K, Asus Maximus X Apex and Corsair h110 for cooling.

CPU will be delidded with thermal solution upgraded and binned for 5.1GHz OC.

I plan to OC to 5GHz stable, which voltage would you recommend - I want a good balance of stability and longevity, as this rig will hold me for good 4 years of gaming.

I keep hearing anything between 1.28 to 1.35, but I understand more than 1.3 will degrade CPU over time which is my concern. I need some balance there.
 
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mdd1963

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Jan 14, 2006
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Try default first, with MCE enabled, and , if stable, try a minor in Vcore adjustment downward to see if still stable...; every cpu is different, but every .01V you can lower core will help temps....

at 5 GHz, I'd think even MCE/5 GHZ on all cores enabled would be a challenge to keep cool without a pretty beefy cooling solution , and, the first review I read of an 8086K, it only had 100 MHz headroom, but, temps were high, but 74C is probably all one could hope for at 5 GHz all cores....(my 7700K almost hits that at 4.5 GHz)

https://www.anandtech.com/show/12945/the-intel-core-i7-8086k-review/3
 
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lessthan0

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Jul 27, 2015
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Im sorry but, every chip is different.
Some 8700Ks can reach 5Ghz without changing vcore, while some need 1.4V+ to achieve it.
Just experiment with it and see where you could get it.
You wont have to worry about part degredation until you reach 1.35V or higher, and even then, the parts lifespan wouldn't be significantly reduced anyway.
 
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Gaidax

Gaidax

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Thanks for the answer, I'm going the easy way purchasing pre-tested delidded I7-8086k with silver-IHS rated at 5.1GHz from der8auer/caseking, so there won't be much question whether it can get there or not.

But it's good to hear that until 1.35V it is safe. I plan to set it at 1.285V and go from there if there will be stress test failures, but it's good to know that 1.3V is safe.
 
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