when i say server case I mean a 19 Inch rackmount server c(29X38X56 enclosure, I wanted to just use a 65watt PWS or something that has almost no pull drain, and Solder wires to the on/off prtion to make a plunger switch to force it to turn on, but couldn't manage to find one.
'Or actually, When Power supplies are running , do they Pull only as much as needed, Or do they pull their max load?
That being said most fans don't use half an amp, keeping that in mind lets just say you have 8 fans that use .5 each. Now watts=amps*volts, sooo .5 * 12 = 6 watts, 6 * 8 = 48 watts..... soooo if your psu can't handle that magic 50 watts, then you got way bigger problems then cooling buddy.
Tornado has .72amp spec so .72 * 12 * 8 = 69.12 watts. Thats at full power and not many people could stand the noise of 8 running at full power.