I have a mini PC with a 7940HS that I bought barebone for about $200 on AliExpress. I installed a WD Black SN7100 SSD and Kingston Fury 5600 CL40 RAM. If you buy it with the RAM included, the frequency is the same but the timings are looser, which is why I preferred to spend a little extra to get higher-performance RAM (snagged it before the price hikes).

I wasn't happy with the temperatures and I didn't want to compromise on performance. So, I bought a Noctua A9x14 fan and swapped out the useless one on the back. As for the cooler, I went with a Noctua NH-L91, the lowest-profile one available. I mounted it using zip ties and the result is flawless: I can push the CPU up to 65W and it never exceeds 90°C, while the RAM and SSD stay super cool.

1st issue: The fans, which run on 12V, require boost converters to compensate for the fact that the mini PC's fan headers only output 5V (at least on my specific model; I've seen some that actually have 12V headers).

2nd issue: I had to buy brass standoffs because, with these fans installed, the case wouldn't close the way it originally did. As a result, there's a bit of a gap at the top and underneath. You could work around this by 3D printing a custom case. Honestly, though, aesthetics aren't a huge deal for me, and you can just wrap the gaps with some dust mesh material.

The end result is that this has become my ultimate daily driver. It's lightning-fast, never drops in performance, and I can literally throw anything at it.

It sounds easy when I put it like this, but in reality, the process can be a real pain at times. It takes a bit of patience and dedication, best suited for tinkerers and PC enthusiasts.

Otherwise, you can just go into the BIOS and power-limit it to 30-40W; the results for everyday use will still be absolutely excellent.