Hi guys,

I've got an Nvidia 970 video card with an aftermarket cooler installed(Arctic Accelero Xtreme IV). The default fan speed(22%/around 700rpm) cools the card well - idling at around 29C and is silent. However, when I do anything on the PC, the fan speed ramps up to the max(around 2200rpm) which is pretty loud.

The temperatures are not a problem - with the fan running at 2200rpm as it always does, it idles at 28-29C and only gets higher when gaming, when it gets to about 50-55C at most.

I've set coolbits to 4 in xorg.conf to let me adust the fan speed. I can change the %, but no matter what I set it to, it always ramps up to 2200rpm with the tiniest amount of load. I've seen scripts that people use to set a custom fan curve, but they don't work as they all just edit the coolbits %.

Does anyone know a way that I could manually turn the fan speed down? Perhaps I could connect the GPU fan to a PWM header on my motherboard?(Will my PC boot if there's nothing plugged into the GPU fan header?) Any help would be much appreciated, thanks!

Oh, and I'm running Debian Jessie with Cinnamon & the 346.47 Nvidia drivers if that is of any help.

what driver are you using ?
nouveau?
the mint deb ?
the Nvidia.run?

did you remove or blacklist Nouveau ?
if not you are not using the nvidia driver


if you are using the DEFAULT "nouveau" that dose NOT support coolbits


how was the AFTERMARKET warranty voiding cooler installed ?
is the thermal paste good ?

did you remove built up dust recently ?

I'm using the Nvidia drivers, version 346.47. Nouveau is blacklisted. The cooler is installed fine & is cooling the GPU fine. Here's a screenshot that shows it's running at 25 Celcius but the fan speed is still stuck at max, even when coolbits is set as low as it can go:

http://i.imgur.com/nQVlo0n.png

from the site
it states "New fan Controller "
did this come with a software disk ?
if so did you install the software ?

or did you set the nvidia profile

The Arctic software is only available for Windows. I've been trying to change the fan speed via the nvidia settings.

I've been monitoring my fan speeds & temperatures using Psensor. The fan seems to ramp up to 2200rpm when the temperature hits 28C, although sometimes it spikes for a second or two at 27C or even 26C. Here's a screenshot:

http://i.imgur.com/IgzafXR.png

I don't have an Nvidia 970, but may laptop use the 840.
The speed of fan is not that high, but I want it to run faster to improve its heat dissipation.
What's the problem of the fan? Do I need to do some clean or something like that to make it better?