Yeah I got a bunch of the Gigabyte windforce fans. They are crap. Worse than the ones I had on my Gigabyte Radeon 7970 and those were also horrible.
There are 3 things you can do
1) Send it in for warranty. Doesn't make much sense right now because you will get it back when Ethereum goes POS
2) Take off the fan with shroud and zip-tie on a couple of case-fans. This method might require some rewiring however and it will make the GPUs take up more room. But case fans are very reliable.
3) Fix your current fan that's dead.
Basically you do this. Get some floss or some string. Once you got the blade off, just use mineral oil, 3-1 oil, motor oil, pretty much anything except WD40.
https://us.v-cdn.net/5021640/uploads/editor/nm/e1tmfw3kqa7v.jpgHere is a video
https://www.youtube.com/watch?v=EnYWO_ypEXIKeep in mind these fans are absolute crap, and on some I ended up ripping off the stator from the mount plate. No big deal, just need to put some super glue and snap it back in.
And it will work good as new. You might have to repeat this every 3 months - 1 year.
