120mm fan shroud for multi GPU setups

by 3dYeti, published

120mm fan shroud for multi GPU setups by 3dYeti Jul 13, 2013

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I have been attaching a fan to the end of my tri-sli'd gpu's since I first got my 480's. The 3d printable bracket I modeled for the 680's doesn't work so well with 780's in an 800D, so I hadn't been using it. The 780's are just a tad longer, and the fan would have been right up against the sata connector cover on the 800D.

After playing Farcry 3 for a few minutes on the new setup, I was surprised to see my top two cards were hitting 79 degrees, while my bottom card never got over 60. Coming from the cool 680's, this wasn't good enough, and the cards where obviously suffering from suffocation. I modeled and printed a new version that tilts up and draws in air from the empty 5.25 bays. Bottom one still stays as cool as ever, and the top two stay in the mid to high 60's.


Use the best settings for overhang on your printer. These come close to 45 degrees, but they are printable without support. I used 1.75mm Protoparadigm PLA on my M2 printer. Mount using short m3 machine screws.

This Thing has worked for me, but your mileage may vary. Their are too many variables on everyone's computer setups to give a guarantee. Try it out and post your results. Remixes are more than welcome.

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The model is extremely small when I open it up in Cura or Slic3r. How much do I increase the scale?

Sounds like mm to inches issue. Try scaling it up 25.4

I would like to make a request, you could make the pin of the hot swap bay? mine is broken

Not to knock your design but you realize you are putting postitive pressure on the exaust on the end of the 780's right?

The 780's I have exhaust outside the case. They are not ACX coolers.

Great part. The UPS store wanted to charge me $163.00 to print it : (

That is crazy. Pretty steep cost for a 74 gram print.