I have recently installed the chasis fan in the rear of the motherboard. But is kind of little bit louder. I heard if i lower the rpm or speed of fan it can quieter. It is directly connected to motherboard which is p5p800 asus. I want to lower the speed and i checked in the bios but in bios it only shows the rpm and other option is ignore nowhere it shows how to lower the speed. Please let me know how i can lower the speed or can make quieter any other way or in bios itself.
second question i have 3 fans in case two in rear one in front but there is no vent in front where is air can go out so what i want to know is which way fan should be facing.