In the BIOS (Computer Setup - Power) there is this mysterious setting Thermal. Fans getting louder during load, mean that the PWM is working. It is possible that no software can read/adjust fan speeds on this motherboard. PWM is hardware controlled by motherboard BIOS. This is what the back of my PSU looks like: Okay, i guess i should use the OPT-FAN port. This way it is possible to control it through some kind of software.īTW I find it hard to believe that your PSU doesn't have SATA power connectors. It sends modulated impulses to tell it how fast it should spin. PWM fan have one additional cable attached. Power, ground, rotation speed report channel. If you connect each fan to separate header, make sure to set identical fan profiles for these headers in gigabyte software. It would be optimal however, to connect them using a splitter, because this way they are controlled from one port, which makes them spin at equal speed. Gigabyte says it's for a pump, so use it for the pumpĬonnect fans to headers marked *_FAN. I don't know if it is actually any different than standard 4pin fan header. OPT header is specifically designed for pump. The CPU_FAN has nothing plugged into it at the moment, so would't i be able to just plug the pump into CPU_FAN instead of CPU_OPT (which will then free CPU_OPT to plug in one of the radiator fans). On your board, connect swiftech cooler to port marked CPU_OPT.
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