Summary: Meets all of my expectations. Prior to installing my cpu would idle around 37°C and under gaming or usage load it would get up to 56-58°C with ambient room temperature around 22°C. Once I installed idle temperature is 27-29°C and while gaming and media streaming it doesn't get above 47°C. Using on a stock clocked i5 2500k sandy bridge with a discrete gpu.
Summary: The blue color is a nice addition to my case. Not too bright but not dim in the sense that you can't see it. Even on high speed, the fan operates very quiet. Planning on purchasing another fan to add to my case. No complaints so far.
Summary: I have these on my case door. I have a C70 Vengeance case and the glass door can hold 140mm fans. They were great for the price and light up really well. They pull a lot of heat out when I'm playing games, so I know they're doing they're work.