I have recently bought a new setup (CPU, CPU cooler, memory and motherboard, complete specs here:
Weyland.be Specs
That new Lian Li case is ultra-silent with all the fans in the lowest speed setting, but ...
... that CPU cooler makes noise sometimes! It's not a constant noise, more like 30seconds noise, 2 minutes nothing, 30 seconds noise, 2 minutes nothing ...
It's hard to describe the noise, it's like there is something loose on the cpu cooler, something iron that is vibrating.
Putting my finger on the fan of the cooler, and thus make the RPM drop a bit, makes the noise go away immediately.
This is after I disabled Q-fan and all other fan-controlling utilities on my computer (they were never active for that matter)
Now what? I don't want this noise at all, my previous Zalman CNPS7700-Cu didn't have this at all. Is this a known problem? Can I fis this myself? Do I RMA the thing?
-edit-
I just noticed this: Normal operation of the fan (and when it makes no noise at all) it's running at 2100/2200 RPM, when it makes the noise it's running at 100-1200 RPM.
I don't have anything (software, hardware fan controller) that "manages the RPM automagically" on my system. The scythe is plugged in correctly on the CPU_FAN1 connecter on my motherboard.
Where does this difference in RPM come from?