most older ones (over 1 year) should not be ran past 2-3w. Most newer ones can usually take 4-5w (or possibly more). I would not hook up a 120mm case fan to a 3 pin header, but a Delta 38 is fine or most 80mm or even some low noise 92mm fans will stay around 3w.
The COMPUTER is your FRIEND!
Happiness is manditory.
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