what is the max power output of 3 pin fan mb headers?

[felang]

Just out of curiosity, does anybody know what the max output power (in watts) the 3 pin fan headers in the ip35 pro mb or any board for that matter put out? I am planning to run a couple of fans that should use about 6 watts from these headers and was just wondering what the limit is... always good to know that kind of stuff.

From what I understand, Abit's Uguru (or whatever it's called) would allow me to change the fan speeds from within the bios, if this is true then I guess I wouldn't need to buy a fan controller.

 

[Fullmetal Chocobo]

It depends upon the motherboard. My Supermicro X5DAE mobo had a max output of 1.5 amps. I would contact the manufacturer and find out from them.

 

[SerpentRoyal]

I would limit maximum current draw to 1 amp.

 

[Zepper]

I'd stay under 0.5 Amp per connector unless I was sure of a higher limit.

.bh.

 

[felang]

So if i were to take 0.5 amps as a conservative max, this would mean a max of 6 watts (12V x 0.5 amps = 6 watts). I should be okay then. I will contact Abit though just to be sure.

 

[jonmcc33]

Any fan with a 3-pin header will work. The only thing I wouldn't do is somehow rig a Vantec Tornado or some other disgustingly high RPM fan on it.

 

[SerpentRoyal]

These connectors are MOSFETs driven. I've pulled up to 15 watts from one header. Output waveform looks good on the scope. Be sure you have a down draft CPU cooler to reduce board temperature.