Fx 8350 (stock) prime95 fails

Dudelliot · Feb 4, 2017

I don't know why my fx 8350 fails prime95. Bios settings is all stock. I have a m5a97 r2.0. Memtest said no errors and the vcore is pretty stable. it,s between 1.2 and 1.41 v under load. the temps are fine. All idéas will help

kanewolf · Feb 4, 2017

What is your cooling? Is it AIO water or air?

maxwellmelon · Feb 4, 2017

what is the specific failure? what is your psu?

Dudelliot · Feb 4, 2017

kanewolf :

It's a corsair h60 v2 and the temps are fine

kanewolf · Feb 4, 2017

Dudelliot :

Your CPU temps may be fine but the voltage regulators don't get any airflow and can overheat. Simple to test. Take the sidepanel off and point a desk fan at the motherboard.

Dudelliot · Feb 4, 2017

maxwellmelon :

i have a xfx pro 850w and mu failure is that "excpected rouning of 0.4.... got 0.5" or something like that

Dudelliot · Feb 4, 2017

kanewolf :

Dudelliot :

Your CPU temps may be fine but the voltage regulators don't get any airflow and can overheat. Simple to test. Take the sidepanel off and point a desk fan at the motherboard.

Hm i will try that

theonerm2 · Feb 4, 2017

I've been in the same situation with an FX 8120. Crappy VRMs can cause all kinds of problems with an 8 core processor. You're basically using 8 cores on a motherboard actually only designed for about 4 or less cores. I actually put a fan on the VRM heatsink and it did nothing to help my situation. I eventually just went to Intel and problem solved.

Dudelliot · Feb 5, 2017

theonerm2 :

Thats a good advice and i will do so in the future. But my motherboard should support the fx 8350 fully. Seen a lot of people with the sam setuo

Dudelliot · Feb 5, 2017

I did a two prime95 blend (both failed) and after i felt the vrm with my hand and it was cold altough the chipset beneeth the cpu was very hot, Is that normal?

Dudelliot · Feb 5, 2017

kanewolf :

I took a huge fan and had it against the motherboard when doing prime95 and it was doing better. I took like 5-10min for test to fail instead of 1-5min. The chipset/nb which is underneeth the cpu is still getting super hot

sizzling · Feb 5, 2017

The m5a97 r2.0 is notorious for having problems with 125w CPU's, the VRM cooling is just not good enough. That said Prime95 does load up the CPU far more than real world applications so it might be ok for normal use and just not extreme stress testing.

Dudelliot · Feb 5, 2017

sizzling :

Thx, so i shouldn't overclock then?

sizzling · Feb 5, 2017

No, that board is not up to it. It struggles at stock as you are finding.

theonerm2 · Feb 5, 2017

What you'll want to do is underclock a bit. Your specific chip might be pulling a little more voltage at stock than most other FX 8350's. I'd say pull it back to 3700MHz or so and see what happens.

Dudelliot · Feb 6, 2017

It's weird tho because net on net sells the same motherboard and cpu together https://www.netonnet.se/art/komponenter/uppgraderingspaket/moderkortacpuinternminne/amd-fx-8350-16gb-1600mhz/207250.8985/

I will change to intel soon but not yet and right now i have disabled the turbo core

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Fx 8350 (stock) prime95 fails

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