Anyone here use a physical fan speed control for theit GPU?

rn2 · 30 Mar 2018 at 12:14

This may be my only choice as the aftermarket cooler doesn't bode well with my GPU for what ever reason and I really want to keep it, I have a Noctua fan controller which I can power via a molex, the only issue is that I can only guess the speed of the fans.

rn2 · 30 Mar 2018 at 16:41

I have managed to find a modded mini gpu extension lead I was thinking to cut the voltage wire on it and attach each end to a simple switch and use that to switch the fans off when I want.

My stock fans would turn off when not playing computer games and stay off and the card never went over 38oC.

rn2 · 1 Apr 2018 at 11:13

Tealc said:
I had to modify my graphics card aftermarket cooler so it would take PWM instruction from the card itself. It involved a bit of wiring and soldering, was easy enough to do. The fan doesn't stop like it did on the stock cooler but idling is at 400rpm so is fairly quiet.

Damn, good job

I would if I had the patience or even tools, what cooler is it? Accelero or Gelid? 400 is very low indeed.

rn2 · 6 Apr 2018 at 09:53

Wow, really nice man I am still awaiting the switch for mine.

rn2 · 9 Apr 2018 at 22:20

Well the little rocker switch turned up although I haven't bothered to fit it yet, reason being that I just replaced the fans with another set of Turbo 3 fans ordered from the online store rather than waiting for a replacement from Accelero and now I have no wobbly fan plus the fans are not speeding up and slowing down all the time now when idle like they were before. I am not sure if it is because I attached a gpu mine to pwm and then attached it back to gpu mini (3 separate cables now between the fans and the card) or because the last fans were just faulty. Either way it seems to have fixed the issue I was having with revving fans and now they just stay at the same speed when idle

I am still thinking of using the switch to turn them off when idle but it's nice to know I have fixed the issue I was having.

rn2 · 10 Apr 2018 at 09:24

Tealc said:
I always think this is a bad idea as you'll almost certainly forget to switch them back on at some point and end up with a toasty card.

If it were me and I wanted the fans to stop spinning below a certain temperature I'd rig up an Arduino to the PWM signal. With a few basic compmonents you can switch the fans on and off automatically via the PWM duty cycle value. I'm not advising you to try this, just thinking out loud.

I get what you are saying, that's why I have installed some software and tested it, it turns off the computer when the gpu hits 70oC or what ever temperature I want it to turn off at. I might not do it anyway as the fans don't seem to be speeding up and slowing down anymore, it was more to stop the fans from being used when they don't need to be on.