Hi Jean, Jens, > FWIW, I observe the same on my Intel D865GSA, same monitoring chip > (Winbond W83627EHF.) >> >> You probably can't stop the fan completely. Can the BIOS stop the fan >> completely? With a 4 pin fan, the fan does not depend on the output of >> the sensors chip and can have a fixed minimum speed. > > What does this have to do with 4-pin fans? This is indeed what I have, > but I can't see the relation. I thought that the 4th pin was simply > there to get proper speeds reported even when low PWM duty cycles were > used. If there more to it than that? > > This is the only 4-pin fan I have and, as far as I know, the only > mainboard I have that support a 4-pin fan, so I can't do that many > tests. I've seen it on a motherboard with an it87 driving an intel 4-pin fan that came with the CPU. It seems to be circuitry inside the fan. (So, replacing the fan might work, no guarantees.) David
