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4 pin connector and speed.

post #1 of 7
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Can the mobo regulate fan speed even when the fan is directly attached to the PSu with the 4 pin connector? I hooked my cm690 fans up to my and the fans went rather slow. Im not sure if this is the power supply (its only 250 watts) or if it was just because the mobo did not think it needed to be cooled down.
    
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post #2 of 7
The only way to control the fan speed when hooked up to a 4 pin is a fan controller. If you don't use some kind of fan control, then your fans run at one speed.
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post #3 of 7
the motherboard can not control fan speed of a fan with a 4 pin 12v connector. so i guess its your power supply? not entirely sure but its not your motherboard deciding it doesn't need to be cooled. it could be that your fans are just a low rpm to begin with so maybe they arent supposed to be going fast. the stock fans that come with the cm690 dont really spin fast so if its one of those dont be surprised if its going slowly. hope that helps you out.
post #4 of 7
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so if i got a fan controller i could speed it up faster than it was running when i just plugged it in?
    
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post #5 of 7
A fan controller will only allow you to adjust down from what it is now. The only way to make the spin faster is to overvolt them.
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post #6 of 7
Quote:
Originally Posted by lhowatt View Post
so if i got a fan controller i could speed it up faster than it was running when i just plugged it in?
The fans have to have different speeds to start with. Some of the cheaper fans don't have different speeds.

Edit: Here is an interesting thread, about your stock fans.http://www.overclock.net/computer-ca...fan-stats.html
Edited by gibsonnova74 - 6/26/08 at 8:29pm
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post #7 of 7
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guess ill get a new front fan side fan and rear fan and use the crappy stock ones on the top and the blue LED one at the bottom. perhaps since the fan doesnt spin very fast it will still provide some extra airflow and not suck in to much crap and give a cool blue underglow.
    
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