Replacing the Fan of a NVidia GTX 970 Reference Edition

I recently acquired a NVidia GTX 970 Founder’s Edition. The device had a damaged fan. As can be clearly seen in the photo, the fan did not sit properly in the mount. This caused the fan to scrape against its metal housing, preventing it from spinning. Actually it’s not clear at all. Nevertheless, the side closest to the camera is higher than the other.

Upon further investigation, the base of the fan was found to be cracked. The crack can be seen in the photo that follows.

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Okay. The crack was not quite as extensive originally. But, after several failed super-glue attempts, I decided to go for the hail-Mary. Unfortunately, my last ditch effort was likewise unsuccessful. Rather then spending more time and money on an epoxy-frankenstein cludge, I thought a replacement fan would make a substantially less dubious solution. I ordered a Delta 65mm 37mm BFB0712HF fan.

After several days on pins and needles, imagining all the things that might go wrong, the fan arrived. Quite unexpected (given my luck) it was a perfect fit; the fan was nearly, if not truly, identical to the original fan. The third fan screw is under one of the heat pads, by the way.

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Now begins the tedious process of reassembling the GPU. In projects like this, I find it very helpful to stay organized. So, basically, not like this:

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As an aside, one of the benefits of having your health reduced to shambles is that you have a lot of extra containers to organize screws. Life is chock-full of such silver linings.

Next I cleaned off the old thermal paste and took several scandalous photos of my new GPU.

For thermal paste I used Artic Silver 5. I started using that brand because other people use it. And those people probably did much the same. And so on, etc. Flawless logic. Except that Intel uses thermal paste produced by Dow Corning. Hmm.

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All Done! Now for the nerve-wracking part. Images of my rig going up in smoke and taking the rest of the apartment with it flash before my eyes.
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Anyway, it works. Cool.

Screenshot (14)

Even better its averaging 35c under load and the fan is pretty quiet. Nice!

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2 thoughts on “Replacing the Fan of a NVidia GTX 970 Reference Edition

  1. A bit of a gamble if you’ll see this half a year after posting, but it’s worth a shot: I’m looking at doing a similar procedure, and I have a couple of questions:

    -All the listings and datasheets I can find for the BFB0712HF list its max speed as 2900rpm (for the high speed model – there are lower speed ones as well), but your readout says 4193 – way outside of expected =<10% variance for a fan. Any idea if the speed is correct, and if so, is your version of the fan just a standard one, or some special "ultra high speed" variation?
    -Was the 4-pin connector the right kind? Does it allow PWM control (and thus stick to the stock fan curve) or do you have to control the fan speed manually?
    -Most listings I can find seem to lack the nuts/threading in the fan base plate. Did yours come with them, or did you have to reuse the ones from the original fan (is that at all possible)?

    Thanks in advance!

    Like

    1. Hi Trond,

      I can’t say much regarding the fan speed besides to say that it seems to behave similarly to the stock fan. I have been using it for some time now without issue. I control the fan speed manually, but that has been the case for every video card I have put in my workstation. Also, I needed to reuse the screws as the fan I ordered did not come with any.

      Hope this helps,

      N

      Like

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