I’ve tried Eco mode on AMD parts before. The performance drop was a lot more than 5% for heavily multithreaded workloads (compiling), but I could see it being negligible for certain single threaded workloads.
In fact, chips have gotten so fast these days, I am seriously considering running my desktop on a laptop-class CPU. Should be able to run it near silently on air cooling alone with low power consumption.
Pertinent to the conversation though, the BIOS is very much lacking, and supposedly software-based fan control is not implemented. That said, running the fans constantly at ~silent levels of rotation keeps the temps cool (you can even run the heatsink without a fan if you want).
[0] https://store.minisforum.com/products/minisforum-bd770i?vari... [1] https://www.cpu-monkey.com/en/cpu-amd_ryzen_9_7945hx
But also, now, the deps for $WORK are in pre-buolt docker so I'm not rebuilding nodejs every other weekend.