Summary: Decent little fans. I have a 7870 in my current setup, and before installing these case fans it would approach 80 degrees in a Furmark test after minutes. Now, with two of these fans blowing directly onto the GPU, temps remained stable at 69 Celsius 30 minutes into a Furmark test. Pretty happy with the results.
Summary: Ordered 6 for my case, 5 of them arrived and work perfectly. Unfortuantely the 6th is DOA. By the time you pay for gas and shipping to send it back its more than the fan cost. So I guess its a loss at this point.
Summary: Smooth running, beautiful glow and Ssssssh; its silent. I was a little apprehensive when buying because a couple of reviewers complained about this fan. Seems like some people just complain because they CAN. Buy this!
Summary: Pros: Works just fine and light is nice and bright and the screw dampener work well too. Cons: If you have a motherboard with 3pins on it, it will NOT control how fast this fan runs; i.e. it will run full power full db all the time. Only way to regulate this type of fan is with a fan control unit separately installed. I highly recommend most people that get this also get a controller as well unless you plan on using it for the cpu fan.