I ended up picking up 2 of these to try them out. http://www.newegg.com/Product/Product.aspx?Item=N82E16835213010

After installation I saw a 10 degree decrease in temperature after sustained usage (~1h). They are much louder than the original bitmain fasn, but with the box fan I have running over the units also Its hardly noticeable. However, they put out a TON more air than the bitmain fans.