Sensors: What fans are these?


New Member
Under my motherboard (Asus Tuf Gaming X-570 Plus) with a Ryzen 5 3600 cooled by an Artic Freezer e34 Sports Duo (it has 2 fans) I see:

- Chassis1 (918 RPM)
- CPU (681 RPM)
- PCH (992 RPM)
- CPU_OPT (1,282 RPM)

What are these fans?

There are 2 case fans, a chipset fan (on the Mobo),
and the 2 fans of the cooler. I never plugged any fans into the CPU_OPT header.

(the chipset is at 57C, the CPU is at 28C

I searched around here and don't see any documentation that explains these terms.


HWiNFO Author
Staff member
These fans should match the fan connector naming on your mainboard. Which fans does the BIOS report?