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.
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.
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.
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.