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Trying to overclock a 4790k - Page 2

post #11 of 29
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Quote:
Originally Posted by benjamen50 View Post

If your temperatures are under 85°C try 1.284v on the CPU voltage. I've had my computer shut off instantly from an unstable overclock or reboot instantly which is weird.

Like I mentioned above. i tried jumping from 1.26 to only 1.27 beforehand, and I couldn't even get past login screen without an instant reboot
post #12 of 29
Quote:
Originally Posted by Spadz93 View Post

Like I mentioned above. i tried jumping from 1.26 to only 1.27 beforehand, and I couldn't even get past login screen without an instant reboot

It doesn't hurt to try more like 1.3V to try to get past login screen right?

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post #13 of 29
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Quote:
Originally Posted by benjamen50 View Post

It doesn't hurt to try more like 1.3V to try to get past login screen right?

smile.gif

Hell, might as well lol, got nothing to lose but time. Just worried that my temps are going to soar
post #14 of 29
Quote:
Originally Posted by Spadz93 View Post

Hell, might as well lol, got nothing to lose but time. Just worried that my temps are going to soar

The temperature jumps are usually like 1-5°C when jumping that much in voltage.
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post #15 of 29
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Quote:
Originally Posted by benjamen50 View Post

The temperature jumps are usually like 1-5°C when jumping that much in voltage.

I'm at about 1.26 now and stressing in the mid 70's, so yeah something tells me 1.3 would be toasty
post #16 of 29
Thread Starter 
Second stress test at 1.265 BSOD'd after 45 minutes, about 15 minutes less than the test at 1.264, so now i boosted to 1.266 and upped the VRIM from 1.8 to 1.85. Let's see...... Interesting that it lasted less time after adding more power?
Edited by Spadz93 - 7/27/16 at 9:19pm
post #17 of 29
Thread Starter 
Quote:
Originally Posted by benjamen50 View Post

If your temperatures are under 85°C try 1.284v on the CPU voltage. I've had my computer shut off instantly from an unstable overclock or reboot instantly which is weird. Increasing VRIN (Input) voltage may help with overclock stability. E.g 1.7v-1.95v or slightly higher than it was previously.

This was the money. Bumped the vrim from 1.8 to 1.85, vcore at 1.266, and prime95 ran a touch over 4 hours. Bumped up to 1.267 vcore and 1.87 vrim to see if I can beat that, still hanging in the mid 70s on temps. Either I'm really not making a noticeable difference or my h100i is really doing its job

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post #18 of 29
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post #19 of 29
0.001v is a really small increase which won't really change the temps at all. Something more like 0.01v would be noticable.

VRIN voltage on the other hand won't make much difference on cpu temperatures at load.
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post #20 of 29
Thread Starter 
Well one of those values put me at quite a nice spot for stability, that's for sure. Running tests to see if I can squeeze out 4.7, and if I'm feeling ballsy enough, 4.8

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