Thread: PC fan connectors
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Old 31-05-2005, 23:55   #18
Matth
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Re: PC fan connectors
Quote:
Originally Posted by jonifen
Is that because the system could not report such a high RPM for the fan? Or is it because they're that damn loud you'd hear it not working before the PC reported it?

But I didnt know that... have a greenie.
The main reason they are not recommended for beasts like the 80mm 80CFM Delta
http://www.sidewindercomputers.com/del80ffb08123.html
is that the beast draws 0.9A instaed of the usual 0.2A or thereabouts for more normal fans.

While a copper track would need to be very thin to burn out at that level, the motherboard fan power may also be fed through a PWM switching control, on those boards that bother to implement it - users of Almico Speedfan http://www.almico.com/speedfan.php will find that while many chipsets support PWM speed control, many motherboard makers don't add the components to do the switching.
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