Carmageddon! I still have the original CD from the late 90s.

Activate hyper drive!

Is it just a NAS? What cpu usage do you expect? Because I built a tower server with a fan less psu and a Ryzen 5600g and if the server is mostly idle the cpu fan never turns on and even under full load it’s just 30% duty cycle and I can’t hear it. That being said a u2 has a lot less passive airflow.