Summary: They're quiet, but not as quiet as I expected, but they do well at displacing air in/out of the computer case... One of the colored rings I received want bent/flawed so it created an annoying grinding noise until I removed it. One of the screw holes was also loose upon receiving the units. While attempting to screw it to my case (by hand), it slide right off the rubber case. Sadly I wasn't even trying to tighten the screw, but simply test the screw's fit.
Summary: these are fantastic fans in every way, very good quality and should last a long time. only thing is if you plan to run these at full power id suggest the quiet edition ones vs the perfeormance.
Summary: These fans are nice fans. Quiet, Move alot of air, And not extremely bright. 2 things that I didnt like: 1. These are only 3 pin ATX plugs. they arent even 4 pin. They also do not come with the molex adapter. Wish I knew this since my motherboard only has 2 case fan plugs on it, (case has enough room for 5 fans) So I had to buy some extra adapters. 2. There is no direction indicator on which way the air flows.
Summary: I put three of these in the front of my Carbide Air. They look fantastic, and are nowhere near as loud as I expected them to be at high rpm. As far as performance goes: My God, these things push air like it's going out of style. I would recommend them for any project.
Summary: Great looking fans but at full speed aren't very quiet. If you put them at a little under full speed they still push a good amount of air and become a lot quieter. White LEDs are balanced (4 leds in the fan) and shine very nicely. Fan doesnt look cheap like other LED fans.