Well, it might be able to run at 5V, but it probably won't be able to start at 5V. The easiest (and only) way to find out is to give it a try - it varies a lot from fan to fan. If it doesn't spin up by itself when you apply 5V or just twitches, give the rotor a nudge in the correct direction; if it just stops even after that, well, hey, there's the answer to your question.
Probably someone trying to tone down on the noise the fan makes, right? Better solution: Get one of those fan control modules - most computer hobbyist stores carry em. They allow you to use a slider to control fan power. Those can still boost power a little bit when the fan needs to start up.
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Actually, I need it for cooling something, non-pc related. First I had 5 volts for it in mind, because there would be less noise, but bravo me, I totally forgot cpu fans run at 12 volts. Thanks, guess I'll grab 12 volt regulator then, just to be on the safe side.
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' Wrote:Actually, I need it for cooling something, non-pc related. First I had 5 volts for it in mind, because there would be less noise, but bravo me, I totally forgot cpu fans run at 12 volts. Thanks, guess I'll grab 12 volt regulator then, just to be on the safe side.
meh ive rigged up cpu fans to run on outlets very simple really just snip the wires find yourself some cord with one of the built in regulators (the ones with with the small box like thing that plugs into the wall) and wire the fan to the cord you got. i do it all the time for broken stuff to make it work so basicly mix and match.
edit: also they run fine on 9V which is the most common cord+regulator combos you will find.