I recently purchased an old R2308IP4LHPC 2U server. Unfortunately, it sounds like a jet engine all the time. I changed the bios settings to auto throttling, acoustic profile, and quite fan idle mode enabled in the System Acoustic and Performance Configuration menu, yet nothing changes. I have noticed that the processor clock speed is not being throttled (i.e., each cpu core is at stock frequency) yet the cpu utilization is reported at less than 5%, so it's definitely idling.
Any suggestions how to get the fan speeds to manager correctly?