@Shmee and
@igor_kavinski
I'm currently using my previous AMD 3700X Wraith cooler, although I cleaned it up before using it for my 5800X (removed the previous thermal paste too; and then applied brand new Arctic Silver 5 for the new setup). I'm aware, however, that a better cooler is recommended. But it's out of the question for the next 2 or 3 weeks, but I'll look into it at some point in a month or two from now.
Maybe the default fan speed for the Wraith cooler isn't good enough for a 5800X, but to be honest I actually had very similar temperatures with my 3700X anyway, really. But my 3700X never really had frequencies going below the 'base' minimum it should have had, which is what my 5800X does sometimes. According to AIDA64, my CPU Fans' RPM fluctuates between 1550 RPM to 1750 RPM on idle (would have been the same on my 3700X, I never touched that ever, not in BIOS and not from any programs in Windows to play around with Fan speeds).
For monitoring Temps I usually stick to either in-game OSD with MSI Afterburner (latest version), or in the Desktop when I do non-gaming benchmarks with AIDA64 (trial version). Now, an example is that - as of this typing - in the Desktop and currently idling (no background gaming going on) the reported temperatures are:
- With MSI Afterburner = 55º to 58º Celsius (fluctuating, doesn't seem constant).
- With AIDA64 = 47ºC to 52ºC (also fluctuating constantly) for the CPU, 56º to 60º for the CPU Diode and Package. Both the Motherboard and the Chipset's reported temps are exactly at 46ºC and constant, that one doesn't move (if it matters to mention).
And finally, my ambient room temperature is about 28ºC (just about to hit spring, but we do have VERY hot and extremely humid temps during the summer here sometimes; those days will be a real test).
So, MSI Afterburner does report higher CPU temps than AIDA64, there's that. Now, I did read around that the Ryzen 7 5800X is known to be a pretty 'spicy' CPU with temperatures anyway on a lot of air coolers (maybe less so with liquid cooling). Besides the Wraith cooler, maybe the voltage is the problem? As I mentioned, I don't overclock at all, and BIOS settings are defaulted. However, I've read reports that the 5800X can run hot and sometimes uses more voltage (maybe from BIOS settings) than it "should". Although, those articles and reviews are in most cases a couple of months old by now. Maybe those problems were from the early batches of the chip and it's been figured out better with BIOS updates from various manufacturers (I only assume that's the case).