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The original was posted on /r/steamdeck by /u/InformationLast5358 on 2025-08-05 11:04:04+00:00.

This is a really simple observation and there’ll be alot of people that picked up on this and this post is for the people who have repasted and noticed that temps haven’t dropped as they expected…

turn off the updated fan control after repasting… I repasted my deck with thermalright tf8, turned on my deck to find that temps hadn’t dropped at all and in certain situations it was 2-4 degrees hotter…

I then realised that my fan wasn’t even reaching 4500rpm at 80C with new paste compared to before repasting it was 6600rpm at the same temps on the updated fan control. on the stock paste with the old fan control profile it would instantly hit 7000rpm and blow my windows open.

after repasting, updated fan control had dropped nearly 2000rpm on the fan! the problem is that now the paste was left to do all the work and I was still hitting 87C on loading screens on the CPU.

I disabled the updated fan control for the first time in 2 years and realised that because the paste was now so much better that the fan didnt need to run itself into the ground trying to accommodate for the poor stock paste.

now the fan runs at 5500rpm maxmum with the old fan control, just under 6000rpm if using 15 watts and never breaks 75C w/15watts or 70C w/12 watts with the highest graphical settings in spiderman and hogwarts legacy.

to avoid neg posters, I’ve seen alot of posts saying they repasted the deck and didnt notice any difference so this is why I’m posting this…

if you’ve repasted and your fan is running 1-2000rpm slower on the updated fan control… TURN IT OFF. the other positive of this is that once your fans start hitting 7000rpm you know that you’re close to having to change your thermal paste as well as keeping the charging chips and RAM cooler in the process extending the longevity of your deck and categorically avoiding any possibility of throttling.

again, if this is obvious to you, you dont need to reply, this is for the people who repasted and got confusing results or no difference. whatever way the fan control works, the updated FC seems to neglect high temp loads and let the paste deal with it while the old fan control works amazingly well as long as the paste isn’t the limiting factor… basically the original fan profile was struggling because the stock paste isn’t great and the fan had to accommodate for that

so repasting seems to only drop fan speed and not temps on the updated fan control… for me anyway that was the case which completely defeats the purpose of repasting

I’m not trying to save a $10 fan by repasting, I’m tying to drop 15C not 2000rpm

anyway hope this helps