Whea_Uncorrectable_Error on Windows 10 with stock 4790k (Not believed to be caused by high temps)

giggsy11

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Aug 26, 2009
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Hi everyone,

Apologies for the long post but i feel the above error is as a result of a voltage issue but here's a little backstory as to how i've ended up in the current situation.

I've had my pc build for a little over a year and i've always been battling with the temps on my 4790k + Corsair H100i, although they've never been dangerously high they've always left room for improvement. In an attempt to improve them i reseated my H100i late last year and got the temps down when running Aida64 for 10 mins, the results were...

CPU - 62
Core #1 - 69
Core #2 - 76
Core #3 - 72
Core #4 - 71

These are a vast improvement over the high temps i was getting prior to re-seating, with it hitting 92c on Core #2, i also lowered my voltage on my core in my Asus Maximus VII Hero bios from 'Auto' to 1.161.

Now, despite improvements in my temps and you may say that they should still be lower i will point out some things, my case is the NZXT H440 which is very starved for air flow, it is in a very small compartment in a desk (still room around the case but the hot air has trouble escaping) and my room itself doesn't have much airflow, i'm convinced my temps will improve when i give my case more space when i move out soon, anyways, this was a bit of back story because regardless of whether the above figures are good or not, i think everyone would agree that a cpu hitting 76c wouldn't cause it to crash and during games it never gets that hot.

I noticed the crashing soon after i made the above voltage changes and despite the benchmark running fine, every so often it crashes (when i stream to Steam or in a game for long periods) so i've gradually been increasing the voltage, i THINK it's at around 1.180 now, it was hitting 1.25v on the 'Auto' setting before.

So my question is why am i getting these crashes? is 1.180v really too low for stock turbo speed? are there any other settings in my BIOS i can check? i'd like to get this sorted as i plan to stream to Twitch in future and need my cpu running smoothly.

I know my temps could be better but i feel that it is unrelated and i'm putting it down to the conditions in which my pc is living in, it's something i may work on in future but like i said those temps shouldn't cause crashes.

Any help would be appreciated.
 
Solution
You are absolutely right. Often chips get more voltage than absolutely necessary and it can be a great way to lower temps and power. However, you are correct that the temperatures on the chip are within operable ranges so unlikely to cause instability. So, the instability is almost certainly due to the voltage adjustment. 0.1V is quite a big difference here so I would recommend manually adjusting incrementally to find the best voltage.

giggsy11

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Thanks for the reply.

I was under the impression that having it to to 'Auto' is a mistake because it doesn't necessarily need 1.25v and setting it lower can further improve temps, i also thought it was pretty common practise for people to manually set voltages for those reasons.

I guess every chip is different and obviously what i have it set to causing instability but are you saying i should set it back to auto? or i could keep cranking up the voltage until i stop experiencing crashes.

I know my temps need sorting too, especially as they'll likely go up when i put the voltage up but i'm honestly just hoping that my case and positioning under my desk is causing it because i've re-seated and re-applied the thermal paste probably over 10 times and the temps have never been as 'good' as they are now.
 

americanbrian

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You are absolutely right. Often chips get more voltage than absolutely necessary and it can be a great way to lower temps and power. However, you are correct that the temperatures on the chip are within operable ranges so unlikely to cause instability. So, the instability is almost certainly due to the voltage adjustment. 0.1V is quite a big difference here so I would recommend manually adjusting incrementally to find the best voltage.
 
Solution