Did I Win the Silicone Lottery???

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WhatDehek

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Mar 16, 2016
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Hello every one and thank you for taking the time to read this! I recently pushed my 6700k to 4.8ghz at 1.37 volts with an average temp reading of 50-55°C. I ran Aida64 System stability (cpu only) for roughly 15 minutes and these were the results. I ran it for another 2 hours with the exact same results. Also im using a corsair H115i all in one cooler.

http://imgur.com/UwNfO9Z

Also I noticed that in CPU-Z it says the voltage is 1.308v. In the bios it says 1.37. What's that about?

Anyways i will run the test again for around 8 hours and if its stable im gonna try to go to 4.9.

Thanks guys!!

EDIT: Also just as a side note i have my h115i set to balance mode and the fans never go over 900 rpm.
 
Solution
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That's called V-droop. The voltage you have it set and and the actual voltage. 1.37-1.308v=0.062volts of V-droop.

The board, wiring and even cpu pins don't deliver 100% of the power, this wasted power turns into heat, if it's way to high you can burn stuff out.

If you go to far you could cook your board or even the cpu pins(amd) or pads(intel) . 0.075volts would be a absolute limit, i usually try to not go higher than a 0.050volt v-droop.

You don't need to test for a whole 8 hours, something like 20 mins is normally ok. I normally run prime-95 and furmark at the same time.
If it passes this fast test, no game or app will work the system that hard so it should be ok. (You can test your video card or cards overclock at the same...
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need4speeds

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Jan 6, 2009
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That's called V-droop. The voltage you have it set and and the actual voltage. 1.37-1.308v=0.062volts of V-droop.

The board, wiring and even cpu pins don't deliver 100% of the power, this wasted power turns into heat, if it's way to high you can burn stuff out.

If you go to far you could cook your board or even the cpu pins(amd) or pads(intel) . 0.075volts would be a absolute limit, i usually try to not go higher than a 0.050volt v-droop.

You don't need to test for a whole 8 hours, something like 20 mins is normally ok. I normally run prime-95 and furmark at the same time.
If it passes this fast test, no game or app will work the system that hard so it should be ok. (You can test your video card or cards overclock at the same time)

1st just keep going up with the speed and doing a fast test of say 2 mins with prime-95. If it passes, go up some more. When it fails, go back down to the 2nd lower one. So if 5.2ghz failed, go back to 5.0ghz and test it. Normally when it fails, only one core will have errors.

The test your using is ok, but if it makes you run it for a set time you might want to try prime-95.

It sounds like it's a decent speed, but i think the voltage is already maxed out because the V-droop is getting too high.
 
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WhatDehek

Commendable
Mar 16, 2016
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1,510
Also I was checking CPU-Z and it's showing a consistent core voltage of 1.356. The picture I uploaded in the original post was from when I overclocked it 2 days ago. Is this normal? Maybe it just had to adjust to the new overclock?
 
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need4speeds

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If you have it set to 1.37 and it's 1.356 that's pretty good. A 0.014volt drop is a lot better than 0.062v v-droop.

I think the voltage you had was ok, but that's max i would go. Stock is about 1.30volts. (It varies a bit from chip to chip)

A drop to having it set to 1.355 and a bit lower clock to 4.5ghz would give you some leeway in case the cpu cooler gets partly clogged with dust in the future. 55C is pushing the limit a bit so you have only at most 4c more to go.

It's a expensive cpu and board so i would be nice to it and also no games need more than a 4.5ghz clock speed with a i7-6700K.
 
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WhatDehek

Commendable
Mar 16, 2016
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I've heard of 6700k voltage can go up to 1.4-1.43 if you're ballsy enough. And I've heard of Temps from 70-75°C are good and I'm well under that.. just curious..
 
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need4speeds

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I don't have experience with Skylake yet. It's 14nm so i would suspect it's more delicate than the older cpus. My Llano is 32nm and likely more rugged.

You have a nice new and fast cpu, i would not take chances like that if it was my cpu and board.
 
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