71 months ago
I have an Akasa Nero 3 cpu cooler on an Asus Z87-K mobo with an I5 4670K cpu. The fan speed in the bios is showing just 480rpm. The specified range for the cooler is supposed to be 500-1500rpm. I have tried altering the fan modes from silent to standard/turbo but the fan speed stays the same. The cpu temperature is ok at 27C but I plan to overclock in the future and will require the higher fan speeds. Any suggestions? It is supposed to be a PWM controlled fan-what exactly does this mean?