Hi, I ended up figuring this out. Kind of a hack though, since it seems the Dell implementation of cooling unknown 3rd party cards is to just ramp up the fans a ton   [WARNING] make sure to run stress tests to make sure the cooling profile is adequate. We test out cooling profiles by running something like furmark and cpu burner to load up all cpu cores and gpu to 100% and then run it for a few days to make sure cooling is adequate.   How to disable 3rd party pci fan ramp can be done over ipmi over ipv4. Download the Dell Open Manage BMC utility, install it on a separate machine like a windows laptop, then in powershell run these commands: Note: you have to enable ipmi over ipv4 in the idrac Instructions can be found here: [URL]  Disable the third party/non-Dell cooling profile:  .\ipmitool -I lanplus -H ipaddress -U root -P password raw 0x30 0xce 0x00 0x16 0x05 0x00 0x00 0x00 0x05 0x00 0x01 0x00 0x00  Enable the third party/non-Dell cooling profile:  .\ipmitool -I lanplus -H ipaddress -U root -P password raw 0x30 0xce 0x00 0x16 0x05 0x00 0x00 0x00 0x05 0x00 0x00 0x00 0x00 Default username is 'root' default password is 'calvin' default idrac ip is 192.168.0.120 (you can find out idrac ip from bios)     You can also just force the fans to run at a specified rpm Run this command to enable this [dot backslash]ipmitool.exe -I lanplus -U username -P password -H 192.168.0.120 raw 0x30 0x30 0x01 0x00 Then run this command to set the fan speed [dot backslash]ipmitool.exe -I lanplus -U username -P password -H 192.168.0.120 raw 0x30 0x30 0x02 0xff 0x50 The last hex bit is the speed as percentage of max. in this example code 0x50 = 80% speed Use a tool like this to convert decimal to hex: [URL]  Source for this: [URL]   
We have a lot of 11th and 12th gen dell servers, r610, c2100, r320, etc All of their fans idle down to be as quiet as a normal desktop pc. Our rack is in the same room as office space. Just bought a r730XD for some more demanding VMs The fans on this r730xd are many times louder than the whole rack! Just idling in a windows install the idrac reports the fans at 43% speed (8.2Krpm) If you dare add a pcie device like a quadro gpu, it is locked to 66% speed The exact same quadro in a r320 1u server idles right down to whisper quiet.    How do you lower the idle fan speed? the minimum fan speed is set at 10% but i have never seen it go below 40% Thanks!
How to quiet r730XD fans (lower idle fan speed)