Summary: I bought two of these to replace some cheap ones that were starting to die. The sound level with two of these fans running is really nice, I was impressed with the noise level. The LED lighting on this is not as bright as some others so don't expect a huge glow off of these. They are more subtle but still look nice.
Summary: I have a total of 5 of these. I replaced the 230mm on the side panel of my Cooler Master HAF 932 Advanced with 4 to get more air moving through my case and it worked. My temps dropped 5 degrees which to me is a good thing. I used the 5th on my Cooler Master Hyper 212 Evo because it only comes with 1. I also wanted a little more lighting in my case which was achieved. I just wish the the led's were a tiny bit brighter.
Summary: I have 5 of these in a gaming rig and moves air well. One fan is really quite but 5 makes a little bit of noise. However, quite fans make it possible to have 5 fans maxing out without it sounding like a jet taking off. I wish the wire leads were longer. Had to improvise to make the proper connections.
Summary: These fans are fantastic. I bought an additional one for my CM Storm Trooper chassis. It mounted easily, runs fairly quietly, and keeps the system cool. The red LEDs look fantastic. The one complaint I have is that I wish the cable was alittle bit longer, because it can be tedious if mounted on a side panel.
Summary: Installed fan within minutes, looks fine, and moves air well. does not sound louder than any other fan i have in computer.It's possible, it even sounds quieter. Red led is softer than some others. but then i wanted softer lighting, not outrageous.