I’ve just finished building a 5950X system that I’m going to be using exclusively with Linux. For my Linux machine I’ve jumped from a 2700X to this and I’m noticing a few differences, especially in how quickly it boosts up in frequency and, consequently, in how quickly cpu temp increases. There’s plenty of discussions/reviews/videos about the boosting/thermal “behavior” of the 5950X with gaming and under windows in general. However I couldn’t find much about boosting and thermals under Linux and specifically within the context of kernel building. So I’m looking for other people experiences.
The 5950X is installed on an MSI x570 ACE and I use a Kraken x63.
And this is what I get when I build a Linux kernel with 32 threads:
a) with PBO enabled in the bios the cpu gets to 82C. And in general use I see a very aggressive boosting of core clocks even with normal desktop environment use.
b) with PBO disabled the cpu stays at 65C. Core frequencies still boost but not as high and probably with lower voltages. General use is also very even.
Also consider that right now where I live ambient is like 28C so that’s a factor too.
The kraken x63 seems to be perfectly sufficient to handle the 5950X since even with PBO enabled its liquid temperature never goes above 38C.
I’m fine with keeping PBO off since it doesn’t seem to be improving performance all that much under Linux but at a cost of significantly higher temps. Maybe it’s good for gaming, I don’t know, but I’m not going to be gaming on this machine anyways.
So is there anyone that can share their experiences with temps/boosting within this specific context (Linux in general and kernel building in particular)?