Or if the temperature stays cooler with the computer side panel off would indicate poor air circulation inside the computer case. To check to make sure it is making good contact, you can open the computer case and press down on the CPU Cooler while it is getting hot and see if the temperature goes down. If the Wraith Spire is not keeping the CPU cooler, it could indicate that it is not installed correctly (Too much Thermal Paste applied, not making good contact with CPU surface, dirty or fan air flow being obstructed, etc) or it is not strong enough for the 3600x.

If the older Wraith is working better at keeping the 3600x cooler than the Wraith Spire it came with, I would suggest, keep using the older one or purchase a better CPU Cooler for the 3600x. The 3600x comes bundled with the Wraith Spire (Non-LED) while the 1600x has no CPU Cooler bundled. Quiet Mode: The fan runs in a quieter level than. Fan sound is less noticeable, but the GPU and GPU performance will be limit for better skin comfort and battery life. Cool Mode: The fan spins in a moderate manner. Strange because both the 1600x and the 3600x have the same TDP wattage of 95 watts. Fan sound is less noticeable, but the period for CPU to operate at turbo frequency is shorter.

Ryzen cpu fan control