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Old 06-05-10, 01:32 AM   #1
CaptNKILL
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Join Date: Jan 2003
Location: PA, USA
Posts: 18,844
Thumbs down Strange fan problem with GTX 470...

I've had this happen several times now, and I don't know what to make of it.

Completely randomly the fan on my GTX 470 will run full bore at what sounds like 110%. Some times it will do it for half a second, other times it will do it for 5-10 seconds. If I check the fan speed in MSI Afterburner it does NOT report this increase in fan speed, which I find totally mystifying. For example, it'll show that its still running at 70% while the fan ramps up to deafening levels and then goes back down after a few seconds.

When I manually set the fan to 100% it still isn't as loud as when it ramps up on its own, so something is clearly wrong.

I've had this happen at the windows desktop and I've had it happen in games. I have no idea what could be causing it because my temperatures are stable and there are no spikes in temperature OR fan speed being reported by MSI Afterburner.

Its extremely irritating because its just SO loud. I'm currently using the 257.15 drivers with the latest version of MSI Afterburner with a custom fan profile. I've turned off speedfan just in case it was causing some sort of conflict, and the problem still occurs. I also do not have any PWM fans in my case, so no other fans should be changing speed. I'm 99% certain that it is the GTX 470's fan that is making all the noise because it has a pretty distinct sound.

I can't find any mention of this issue anywhere online.
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