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4930K degrading very quickly? - Page 2

post #11 of 31
Thread Starter 
Quote:
Originally Posted by jasjeet View Post

Try with C States disabled.

How long was your first Prime95 test at 1.32v?

Have tried C-states also. A couple of hours with no errors. Planned to do serious testing when this issue occurred.
post #12 of 31
What are your RAM settings, try loosen the timings and test at 1600Mhz, Vcore 1.32v.
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post #13 of 31
Thread Starter 
Ram settings are XMP 2133. Using Corsair Dom. Plat. 2133 CAS9 1.5v. Done HCI memtest and it passes 12 instances without issue. So ram it isn't.

BUT, I just had a thought. Since all this started more or less when I installed HC110 cooler and changed air flow in case.
Maybe the VRM on the MB is not getting enough cooling therefore the BSOD in´Prime.

Also, I ran Intel burn and it passes without problem. But Prime crashes.

Gonna try an additional fan on the MB.
post #14 of 31
If it is an Asus mobo it might be the rare issue where bios corrupts sometimes when you save settings and only way to fix it by reflashing. When it happens it fails stress tests even with stock settings. I've heard of it happening only on Z77 mobos though so it is very odd if this is the reason for your issues. Both of my P8Z77-v PROs suffer from this.
     
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post #15 of 31
Quote:
Originally Posted by kiario View Post

Ram settings are XMP 2133. Using Corsair Dom. Plat. 2133 CAS9 1.5v. Done HCI memtest and it passes 12 instances without issue. So ram it isn't.

BUT, I just had a thought. Since all this started more or less when I installed HC110 cooler and changed air flow in case.
Maybe the VRM on the MB is not getting enough cooling therefore the BSOD in´Prime.

Also, I ran Intel burn and it passes without problem. But Prime crashes.

Gonna try an additional fan on the MB.

I encountered a similar issue before where prime would crash, but IBT would run fine

Turned out to be my RAM OC, even though specific ram testing had not brought up any issues. Dropped the RAM timings and OC to 1600mhz and it worked fine
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post #16 of 31
HCI Memtest only rules out damaged ram or very poorly set timings, not slightly unstable settings or timings/speed the CPU cant keep up with.

If IBT passes and Prime95 fails, seems more like RAM too me. What happens when you run a small fft test in Prime95?
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post #17 of 31
Thread Starter 
small fft crashes prime immediately compared to blend around 20 sec.
post #18 of 31
And what happens when you run Small FFT with Ram at 1600Mhz CAS9 ?
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post #19 of 31
Thread Starter 
The more I think about this the more I am convinced that this is all because of hot running VRM on the MB.

After I installed H110 i got workers stopping in prime but no crash.
Then I repositioned the front two 140 mm fans in my air 540 case to lower position by drilling new holes to improve GPU cooling.

It is after that prime started crashing. And this now leads me to believe that VRM is throttling due to no air flow at upper half of case due to reposition of fans and HC110 instead of Noctua air cooler before.

All evidence point to this. Throttling VRM could cause prime errors. And one thing more is that when I raised VCC and VTT volt prime crashed immediately. Meaning even more heat on VRM.

So fingers crossed, tonights gonna be exciting when I get home and put a fan blowing on the VRM.
post #20 of 31
Thread Starter 
Interesting. Opening the case and letting a fan blow on ram/VRM and prime 95 is stable again.

4.5Ghz at Vcore 1.304. HWmonitor is showing VID volt as 1.251.

How come the vid volt is so low? Isn't that quite a big Vdroop?

Perhaps I could use the rear exhaust fan as intake instead because I have two 140mm pushing air through the H110 at the top = exhaust.
Or use them as pull instead but it will pull warm air in case.
BR Anders
Edited by kiario - 4/10/14 at 10:19am
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