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Yeah my bad, I shouldn't mentioed it... this is the 120mm case fan (Thermaltake Smart Case Fan), and it's connected through the 4-pin molex connector... Yeah it's not connected to the mobo, if it was, I wouldn't be able to get the higher speed without changing the setting in the BIOS. The fan has the 4-pin connection, then a 2-pin connection to the fan contorller in the PCI slot (came with the fan).
I'm pretty sure now it's the fan controller too, it's been kicking up into the higher speed and staying there, even if the knob's at the lowest setting. I just got the PCI slot controller because I just wanted a general control over the fan, I don't OC either, so I don't need to worry about cooling or RPMs really. It's just to quiet the fan down or speed it up to get more airflow when I'm gaming. Go figure, now it's stuck on the faster speeds and it's even louder than my old case fan.
I'm always quick to blame my PSU for problems just cause it's the one thing in my comp that I'm unsure about (420W, mATX, came with my Aspire X-QPack case). I've some read reviews where they said the PSU went to crap and replaced it, so I've definitely been keeping an eye on it.
Anyways, looks like I'll be looking for a new fan controller now... actaully would it be better if I did just connect the fan to the mobo then use some program to control it?
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