But regarding MQ and his 60 degrees after hours of rendering, I think our watercooling has a problem like too small for the big TR4 cpu...
I use the following setup:
Case:
-Phanteks Enthoo Pro with removed HDD bay
Fans:
-200mm in the front, blowing in
-140mm in the rear and top blowing out
Cooler:
Noctua NH-U14S with two fans
I'm rendering lots of 4K animations which takes several days, and CPU temp never rises above max. 61-62°C at about 22°C room temp.
Considering it's a ~3000$ machine I'm super impressed, especially compared to the Dual Xeon 6148 build for 3x the price tag.
See the attached screenshot for my temperatures. It's just 15 minutes, but the temperature doesn't raise much more, even after hours. Main reason for using air cooling instead of liquid cooling was reliability and safety.