Really loud computer =/

hey, first of all thanks for taking the time to look at my thread. :)

my computer seems to be really loud, i really notice it right before bed when the house is silent and it turns off. its like a plane when its on. i tried stopping some of the fans whilst starting up and i found that the cpu fan makes the most noise =/
i would like to make it quieter but still able to run half decent games when need be, for example, Aion.
could anyone recommend any changes i could make or any cpu fans i could purchase that would be quieter than my current "freezer pro 7" and under £20 budget.

many thanks,

1, is PWM function turned on in the BIOS?
2, What's your CPU?
3, overclocked? what voltage?
4, What case have you got? / how wide is it in mm?

ooo just went into bios to check that thing, and found a smart fan config thing, turned that on and its much quieter :O thank youu very much for nudging in the right direction lol :)

Well your lucky, many of the eairly ACf7P cooler fans had the PWM function die on them, leaveing you stuck at 100% all the time :(