Hi, i have a Ryzen 5600x with a 24c room temp it runs 39c idle and 85c under load like cinebench. i have a hyper 212 too. got 1 fan intake front and 2 exhaust, back and top.
I tried changing the thermal paste but it made no difference. my back exhaust fan runs at 800rpm, while the top exhaust and front intake runs 1500rpm. cpu fan 1500-1800rpm.
under load it mostly runs at 4.4-4.5ghz. i think mine is running a bit too hot honestly, the 212 should be able to cool it to ~70c under load.