85°C is still fine. You wouldn't want your system running at those temps all the time but if those are only spikes during intensive tasks, you're good.

If you want your PC to run a bit cooler, check your airflow, set manual fan curves, or try out a mild undervolt.

Normal

Zen3 is OK to 95c TJmax, the cache would probably like to be cooler than 95 so you're fine at 85

5700x3d is not a high wattage part tho if you have a big tower cooler it should easily be under 70c l, check mounting pressure, thermal paste (do not use a pad)

I'll tell you, I had a mild panic attack when I upgraded my 3700x to a 5900x and the AIO cooler said it went up 14C at rest. Zen 3 is a beast with power consumption and heat loss.

As long as it stays under 95, you're technically safe.

Now that I think of it, there's a simple check for the case fans. I'll try removing the front cover and see if it helps the temps in a meaningful way.

When I was doing benchmarks on my 2080 it would throttle down when it hit 85. I changed the GPU fan curves to always run at least at 50% and that seemed to keep ot from warming up. I used the evga precision or whatever GPU software and one of the graphs was thermal throttle so it would spike up. Not sure how the 4080 handles temps

85C on the GPU core temp for the 4080 super is unusually hot in my opinion. It's not hot enough to melt the card but that seems weird. For comparison, my case has dogshit cooling and my 4080 super FE never go above 70C core temp, even in the summer when my room was hot as fuck Maybe you just need a more aggressive fan curve? You can set one in MSI Aftervurner.