I can give you some tip for your situation why fan speed too overcharged it caused by HP server have some compatibility with variable parts. In example, if pci-express GPU card it doesn’t support option card sensor data(OCSD) that made by the protocol between HP and some hardware vendors, temperature sensor abnormally rising up that not exactly celsius and then the fan speed also rising up related the abnormally temperature. So why you can’t control the fan speed. Also you can check when you booting up, you can run the ‘intelligent provisioning’ with press F10 key. After intelligent provisioning started, not so long time, the fan speed going back to normal condition. I doubts IP(Intelligent Provisioning) have some command to control fan speed back to normal condition. So I think make setup the connect to the SSH or serial to read the server realtime data dumping with run IP then, find which command is slow down the fan speed as normally condition. Unfortunately, I didn’t familiar with doing this so if you as well known doing this command capturing or you know interested in the person who can easily solve it, please solves the problem instead of me. There have so many people got a pain of this HP server fan noise issues. Sent from my iPhone using Tapatalk