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Don't throw away your old PC—it makes a better NAS than anything you can buy
(www.howtogeek.com)
this post was submitted on 30 Nov 2025
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Yeah.
In general, 'big' CPUs have an advantage because they can run at much, much lower clockspeeds than atoms, yet still be way faster. There are a few exceptions, like Ryzen 3000+ (excluding APUs), which idle notoriously hot thanks to the multi-die setup.
Peripherals and IO will do that. Cores pulling 5-6W while IO die pulls 6-10W
https://www.techpowerup.com/review/amd-ryzen-7-5700x/18.html
Same with auto overclocking mobos.
My ASRock sets VSoC to a silly high coltage with EXPO. Set that back down (and fiddle with some other settings/disable the IGP if you can), and it does help a ton.
...But I think AMD's MCM chips just do idle hotter. My older 4800HS uses dramatically less, even with the IGP on.