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While working on my main X58 SLI build, I wanted to test some RAM in a known good motherboard. I had enough spare parts minus a PSU and GPU to assemble another working system, so I picked up an old EVGA GT 630 and Fractal Design Define R5 Window. The case will be another entry, as I have a lot to say about it. Unfortunately, the GPU runs its fan at almost 100% at all times which is extremely annoying. While fine for testing, my end goal with this system was to be a media center PC since my DVD player is pretty bad and I didn't want the main SLI system to run just for video playback.

I tried re-pasting the GPU die, and that didn't do anything. Temps reported 39°C, not that warm... stopping the fan with my hand for a minute only brought the temp up a few degrees, definitely within reasonable opperating temp. Some further reading has lead me to believe that manufactures of these low end cards only baked in two speeds, low and high.

I found a video where someone soldered in a fan control potentiometer. Since it was run at full resistance, it could be replaced with a single resistor, but I have a spare controller on hand.I thought about soldering but didn't want to modify the card or the controller, so I just forced the fan connector into the controller... Not ideal, but the pins sort of fit.

EVGA GT 630 video card with external fan controller connected to its cooling fan.
GT 630 w/external fan controller.

After some testing to make sure it was working, it was time to install it. Luckily, the mounting hole was perfect for fitting it to the PCI slot I/O bracket.

GT 630 installed in computer. Fan controller screwed into rear PCI slot mount parallel with the expansion cards.
GPU and controller installed.

At the lowest setting, the fan is about equal to the sound of the case fans, which is perfect. After playing back a DVD and streaming YouTube for an hour, the temps stayed at 45°C even with the significantly lower fan speed. It should work out quite well.

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