Question MIGHT have forgotten to apply thermal paste

Apr 25, 2019
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I’ve finished my custom water cooling build for about a month. Today, it suddenly came to me that I might have forgotten to add thermal paste on my CPU... I am using a ryzen 9 3900x, and it averages 45 degrees idle. The high temps have perplexed me for a while, and not having applied thermal paste would have explained them perfectly... The thing is... there is still a chance that I have applied the thermal paste, as it has been a few weeks, and I have no recollection whatsoever... I don’t want to risk taking my whole loop down just to discover that thermal paste has been there the whole time... what should I do?
 

jimmysmitty

Champion
Moderator
It depends on what your load temps are. Although a bit of reading shows that the 3900X tends to run hot:


Unless you are running hard tubes I would double check. Wouldn't hurt.
 
Apr 25, 2019
99
1
35
0
It depends on what your load temps are. Although a bit of reading shows that the 3900X tends to run hot:


Unless you are running hard tubes I would double check. Wouldn't hurt.
The temps are within safe ranges. I am indeed using a hardline...
 

jimmysmitty

Champion
Moderator
If you forgot TIM I doubt the temps would be very safe. As little as it is it makes a massive difference going with or without unless you lap your CPU and water block to be near perfectly flat.

If the temps are within acceptable levels you probably applied TIM.
 

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