I have a P4S533-E motherboard and have the Q-Fan set to 10/15.\n\nWhen the pc has been off and cold for some time, after booting and\nrunning the CPU temp is around 38 Degrees C and MB is around 37 C, and\nthe fan (as shown by Asus utility) speed is 2200.\n\nThe system is quiet at this point. But after using the PC for 30\nminutes, reading email, downloading files, etc. the fan speed will\nincrease to around 3100 or 3200 rpm with cpu/mb temps only a degree\nwarmer.\n\nThe system will stay there at 3200 rpm regardless. But a quick reboot\nputs the fan back to 2200. (Bios 1007).\n\nIt seems to me that once it gets up there, the BIOS will rarely lower\nthe fan speed even though I'm using Q-Fan.\n\nI like a quiet PC but I'm not getting it. I find myself rebooting\nduring the day just to bring the fan speed down.\n\nAny solutions? I keep looking for another BIOS upgrade but I doubt if\none is ever coming for this motherboard.\n\n?????