Supermicro IPMICFG
How to avoid changing fan speed rotation (if this is annoying you).

Get Fan speed information:

IPMICFG-Win.exe -fan

To avoid changing fan rotation speed set [Heavy IO]:

IPMICFG-Win.exe -fan 4

You can download utility form SuperMicro web site:

P.S. My mother board: SuperMicro X11SSH-F

Re: Supermicro IPMICFG
Supermicro X9/X10/X11 Fan Speed Control

#set fan mode to "full"ipmitool 
raw 0x30 0x45 0x01 0x01
#set fans in "system" zone to 37.5%ipmitool 
raw 0x30 0x70 0x66 0x01 0x00 0x24
#set fans in "peripheral" zone to 25%ipmitool 
raw 0x30 0x70 0x66 0x01 0x01 0x16

Re: Supermicro IPMICFG
The list of mother boards for the workstation (E3-1200 Intel processor):

SuperMicro X11SAE-M (1 PCI-E 3.0 x16, 1 PCI-E 3.0 x4)