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Need help with 3900X & AIO

FunksterPanda

FunksterPanda

FunksterPanda

Associate
Joined
14 Nov 2019
Posts
4
I just built the machine from my sig and the temps seem a bit high.
CPU is stock with PBO etc all on auto.

In a closed case 1 front 140mm brings cool air in, one back 140mm takes hot out, the AIO is on the top 2x120mm taking hot air out, room temp 24C and using Thermal Grizzly Kryonaut.

Cinebench R20 all core temps hit 80C.
Prime95 temps only hit 70C weirdly enough.
Battlefield 5 1080p ultra never goes above 65C.

I am coming from 1700 with an AIO and these 3900X temps seem high for the Arctic Freezer II 240 which in all reviews performs like a champ.

Do these temps look normal or should I be worried about maybe installing the cooler wrong or something else?

Any input is much appreciated.
Many thanks!
 
FunksterPanda said:
I just built the machine from my sig and the temps seem a bit high.
CPU is stock with PBO etc all on auto.

In a closed case 1 front 140mm brings cool air in, one back 140mm takes hot out, the AIO is on the top 2x120mm taking hot air out, room temp 24C and using Thermal Grizzly Kryonaut.

Cinebench R20 all core temps hit 80C.
Prime95 temps only hit 70C weirdly enough.
Battlefield 5 1080p ultra never goes above 65C.

I am coming from 1700 with an AIO and these 3900X temps seem high for the Arctic Freezer II 240 which in all reviews performs like a champ.

Do these temps look normal or should I be worried about maybe installing the cooler wrong or something else?



Any input is much appreciated.
Many thanks!
Click to expand...

the 3900x is a lot harder to cool then the 1700x and the aggressive boosting on 3900x to get all core clock speed and single core will produce more heat.

the temps seem within normal relms and not far off mine altho I have a Phanteks elvov x with 3 120mm intake and 3 120mm at top for exhaust and 140mm at back but I’m using the Noctua d15 bit all my fans spin only to about 700rpm.

being in the low 80s will be about right for the 12 core 24thread cpu you have it will keep the boosts as high as it can and only really start to throttle harder at 85 degrees
 
Did play around with it some more and here are the results:

I turned on PBO instead of auto and turned on AutoOC and set it to 200mhz.
To my surprise, it really did bump up the speed by ~200mhz.

So I ran prime95 and it set all cores at 4.0 (prior to PBO and AutoOC they stayed at 3.8).
The CPU used 190W (I checked the wall with a meter not only hwinfo) and the CPU didn't go over 85C.

I think 85C max temp at 190W in prime95 is ok but let me know what you think.

BTW I use Ryzen High-performance power plan.

Thanks!
 
FunksterPanda said:
I just built the machine from my sig and the temps seem a bit high.
CPU is stock with PBO etc all on auto.

In a closed case 1 front 140mm brings cool air in, one back 140mm takes hot out, the AIO is on the top 2x120mm taking hot air out, room temp 24C and using Thermal Grizzly Kryonaut.

Cinebench R20 all core temps hit 80C.
Prime95 temps only hit 70C weirdly enough.
Battlefield 5 1080p ultra never goes above 65C.

I am coming from 1700 with an AIO and these 3900X temps seem high for the Arctic Freezer II 240 which in all reviews performs like a champ.

Do these temps look normal or should I be worried about maybe installing the cooler wrong or something else?

Any input is much appreciated.
Many thanks!
Click to expand...

Assuming you have put paste over the whole surface of the chip, as it's not single chip at the center, you should be OK.
I have my 3900X with a Noctua D15 and works fine.
 
Those temps are fine, ignore and enjoy the CPU, I have similar temps on my 3700X and it took me a month to stop looking at the monitors but now I just don't care :) I have never seen it above 81 and that is only with cinebench runs.
 
welshrat said:
Those temps are fine, ignore and enjoy the CPU, I have similar temps on my 3700X and it took me a month to stop looking at the monitors but now I just don't care :) I have never seen it above 81 and that is only with cinebench runs.
Click to expand...

I couldn't have said it better myself.
 
I got my 3900x temps down by using a small negative voltage offset, dropped the Cinebench temp by 10C and increased the score. My chip likes -0.01v but it depends on your chip/mb.
 
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