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Ryzen 3600 PRIME95 AVX Workload Insane Temperatures

Jarrod

Jarrod

Jarrod

Associate
Joined
28 Oct 2011
Posts
539
Hi all,

Recently grabbed myself a 3600 - applied a modest 4.2 all core clock at 1.275v using a high airflow case with a Arctic Coole 34 Duo installed.

Temperatures during AIDA64 stress are around 74c. In games is around 55-60c. All fine there.

However, Prime95 will reach 90c fairly quickly, within 10 minutes. If I disable AVX workloads within Prime, I'll get around 74c. My question is - why? Is there something I'm missing with this? My friend has a 3600 at the same frequency/voltage, but under a H100 kit, and his Prime95 with AVX workloads hit 74c max.

Very strange! Is it simply a matter of my cooler not being sufficient to deal with that workload at these frequencies/voltages?

Thanks for any help!
 
Jarrod said:
That simple you think? I'd expect a 8-10c difference though.. not 20c+. You could be right, it just seems too far off to me?
Click to expand...
Given your aida and in games temps are ok
Appears your coolers working ok
I could be wrong of course not used air coolers in years
But that's a relatively inexpensive mid sized cooler
If it was a larger more expensive cooler then would be more concerned
No doubt some one else knows more about air cooler than me will give
An opinion too
 
I would say that seems a bit off also. That cooler is pretty good, and actually performs better than a H100i in a review.

spf0Vg8.png


For you I would suggest a re-mount with fresh paste. Also make sure your fans are ramping up with the temperature sufficiently.
 
no idea what said:
I would say that seems a bit off also. That cooler is pretty good, and actually performs better than a H100i in a review.

spf0Vg8.png


For you I would suggest a re-mount with fresh paste. Also make sure your fans are ramping up with the temperature sufficiently.
Click to expand...

Yep so did a full re-mount last night with MX-4 paste. Both CPU fans are ramping up to 2100 RPM under load. They're orientated correctly (push,pull). Seems odd.
 
Is it possible with 4 heatpipes the AVX is overloading the heatsink? Those tests might be non AVX stuff? Whereas the H100i has sufficient thermal capacity to cope with the load?
 
Jarrod said:
Yep so did a full re-mount last night with MX-4 paste. Both CPU fans are ramping up to 2100 RPM under load. They're orientated correctly (push,pull). Seems odd.
Click to expand...

What voltage are you running out of interest?

One of the differences may be if your friend is using his radiator fans as intake fans, he's getting cooler air straight onto it helping temperatures which I find does help quite a bit. What case are you running with and case fan setup?
 
no idea what said:
What voltage are you running out of interest?

One of the differences may be if your friend is using his radiator fans as intake fans, he's getting cooler air straight onto it helping temperatures which I find does help quite a bit. What case are you running with and case fan setup?
Click to expand...
So I'm running at 1.275v. In regards to intake, I have 3x intake at front of case, 2x exhaust at top, 1 x exhaust at back, and the two cpu coolers in push-pull exhausting out the back.

I have taken the side panel off to see if it was an airflow issue, but no change to temps whatsoever practically.
 
Jarrod said:
So I'm running at 1.275v. In regards to intake, I have 3x intake at front of case, 2x exhaust at top, 1 x exhaust at back, and the two cpu coolers in push-pull exhausting out the back.

I have taken the side panel off to see if it was an airflow issue, but no change to temps whatsoever practically.
Click to expand...

Part of the problem could well be too many intake fans. As a rule a case is cooler inside if you have more exhaust capacity than input capacity. Pushing large amounts of air in is only of benefit if you are pulling even larger amounts of air out.
 
kitfit1 said:
Part of the problem could well be too many intake fans. As a rule a case is cooler inside if you have more exhaust capacity than input capacity. Pushing large amounts of air in is only of benefit if you are pulling even larger amounts of air out.
Click to expand...

Hmm maybe - but with the side panel off I get roughly the same temperatures
 
What version of Prime95 were you running ? Give OCCT a go, it's as good as Prime95 but gives you more options of what version AVX you run. Ryzen can only run AVX and AVX2. Just like Prime95 you can run large medium or small FFT's. Only small FFT's will give the highest temps though.
 
humbug said:
That is odd. try the one i linked.
Click to expand...

Same version I have... just re-downloaded from that link to make sure. But same thing. Small FFT with AVX Workloads... instant 90c with 88W power draw... wonder why my CPU is reportedly drawing nearly double the wattage as yours?
 
Jarrod said:
Same version I have... just re-downloaded from that link to make sure. But same thing. Small FFT with AVX Workloads... instant 90c with 88W power draw... wonder why my CPU is reportedly drawing nearly double the wattage as yours?
Click to expand...

Small FFT, AVX was on in the last one and is in this...

3OziGlc.png
 
humbug said:
Small FFT, AVX was on in the last one and is in this...

3OziGlc.png
Click to expand...

And thats with another air cooler right? Surely this Arctic Cooler 34 isn't THAT BAD that I'm gettng an additional 20c on a lower voltage than yourself? Also curious, the cpu doesn't throttle itself even at 95c.... frequency and voltage remains the same...
 
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