Is this temp normal for CPU?

[mclaren85]

Hello,

With highest performance settings and fully unlocked bios settings, prime 95 benchmark results are as follows: So do you think 80C is normal?

 

[Ware]

Yes, 80 is in the "normal" operating range.

 

[Solaris17]

Well within thermal limits for load. The days of 60C maxes have been gone for some time but there are still so few that realize it.

 

[Bill_Bright]

The days of 60C maxes have been gone for some time but there are still so few that realize it.

Totally agree. But note the key word there is "maxes". If my CPUs temps jump over 60°C during heavy (but "realistic") loads, then quickly drop when that load recedes, that does not bother me. It is when they rise above 60°C and sit there for more than a few seconds that is going to get my attention and cause me to verify my fans are spinning properly, my case vents and interiors are clean of heat-trapping dust, or that there is no stuck process keeping the CPU stuck at 100% for no apparent reason.

That said, I never lose sight of the fact I still have lots of headroom left. So having my attention is a far cry from panicking.

Also what few seem to realize is that Prime95 is NOT an indicator of "normal" operation. In fact, it is specifically designed to impose "a worst-case scenario for computational workloads." Prime95 establishes an artificial environment.

IMO, so many people panic unnecessarily when they see their Prime95 results that I almost feel only professionals who understand the results should have access to it. Upon further investigation, you learn their idle temps are typically under 40°C, during normal use, maybe in the low 50s and during extreme gaming, peaks rarely ever approach Tjmax.

Case in point. The OP has an AMD Ryzen 9 3900X. As seen by AMD's published specs, that process has a "Max. Operating Temperature (Tjmax)
95°C".

80°C isn't even very warm.

People need to keep tabs on the temps during regular use, then here's an idea - enjoy their computer!!!

Disclaimer: I am talking about CPUs in standard (mid or larger) PC cases, not in laptop or AiO cases where all bets are off.