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SMControl solves "always-running" laptop fan - better than using Print Monitor as a work-around
Authored by: zahadum on Jun 09, '09 08:58:46AM

first, SMCControl will give you complete control over your fan speed (on an application level basis if required).

second, your problem isn't really the fan staying "stuck" at max when there is no CPU load ... your problem is that a buugy app is going to town on your CPU! - so get that situation fixed!

third, it is NOT true (or at least adviseable) to "turn off" your fan! - the default min speed is 1000rpm (which is whisper quiet, so I think you presume that the fan is not running even when it actually is! ... in fact the fan in a mbp does not become noticeably loud until 4000rpm! ... it is only the upper range of rpm (4k-6k) that has an full airplane drone effect).

indeed, higher fan speeds are actually to be preferred because they keep your machine from running crazy hot (100C) under load! - and SMControl is the only way to *FORCE* the fans to actually do their job & keep the machine cool (otherwise an over-heated machine will randomly crash or at least have a diminished operating life).

when the fan speed is bumped up to 4k rpm you can expect to clear off at least 20C of heat from the machine - enough to make it bearable to actually run the machine on your LAPTOP :-)

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