I was surprised at how quiet this cooling fan is ...
585719
I was surprised at how quiet this cooling fan is. The one that sits on my Xbox 360 make a little noise at start up. I thought it wasn't working because  it was so quiet.

I have had it on my Xbox One for these than 12 hours but it seems to be working well. I can feel heat coming out of it.
3859967
I'm kinda surprised that this thing is no more silent than the 4-year old stock case fan I already had in my Dell PC. Both of them operate at a max RPM of 2200 RPM and both produced roughly the same amount of noise at those speeds. The only difference is this Arctic pushes slightly more air, but it's a minor difference and that's about it.
4859224
Extremely quiet fan. I use it with the noise reduction clamps.
2546866
I was amazed after charging the included battery, and running the fan on low speed, it ran for seven hours and five minutes.  After reading some other reviews, I was expecting 5-6 hours but my unit exceeded my expectations.  I was really amazed at how much air is moved even on low speed and the unit is so quiet.  I would recommend this to anyone needing a small portable fan.
2516909
You can barely hear the fans even with nothing else running, it is providing an excellent amount of cooling so far for my laptop, the final test will be in the high temps on summer when my laptop was going into thermal shutdowns.
1901266
This fan was needed for the back side of a motherboard. I have a Rosewill case that would allow me to install a fan on the back side of the motherboard on the side panel. I cant say that this has made a huge difference in cooling as I have 7 other case fans installed but I wanted to go all out. The fan is thin, quiet and moves about 40 cfm. For how thin the fan is moving that much air surprised me.
2504336
it is very quiet. I'm quite surprised. you can hold a normal conversation next to this compressor when its running.
1412531
Not a lot of cooling for the noise generated by the fan. Adequately cools, but the PC is louder than normal
694419
After comparing many brands in Amazon, I chose this fan to put inside my small office for better air circulation. It did a great job! This fan is very easy to assemble. I took it out of the box and assembled it within less than 2 minutes (took me longer because I had to find my wall plug extension). Then, it works wonderfully. When the fan is turned on, it's quite silent and the wind also quite powerful. However, there's a time when I changed the position of the fan to be on a top of a box, then the fan starts to have a low noise when it's turned on. When I changed the position again, the fan low noise turned quiet again. So, I think it depends on how you position the fan. I don't mind either low noise or no noise at all. Once I left the fan turned on for the whole weekend (Friday through Monday morning), and when I came, the fan is still working well. So far, I like it. I think I made the right choice with this fan!
3697898
The fan is not silent,  but only if listening for it.  My portable fans in the room and much louder.
815931
I guess I underestimated the size of this thing.  It is really small.  And because it is so small, it doesn't blow much air.  It will blow air on a specific part of you, but not in a general all over direction.  And I'd estimate that the air dissipates and you can't feel it after about 24 inches.  On the other hand it is REALLY quiet!  I can't hear it at all over the regular air condition flow in my office.  In fact it makes almost no sound at all.  And the build quality seems to be good.  It's small if you are needing it to be mobile.  But for me it just doesn't cool me down enough.  When I get in to work my office is warm and I am just a  naturally hot person.  And this fan isn't quite cutting it for me.

I posted a picture of it next to a 12 oz bottle to get a reference point of its size.
1334848
The color-changing case fans are extremely quiet.  Theyre just as quiet as my Stealth brand case fans, which is saying a lot.  While I like the magnetic control module that shipped with the color-changing case fans, I find myself being cautious with the magnet that allows it to be mounted in the case, as Im extremely concerned about how it might affect my SSD drive and SATA hard drives.  That said, the case fans were very easy to install, are very quiet, and are really neat to look at.  I like that you can choose from an array of colors, or let it change the colors automatically.
3925862
Very quiet. I use it to cool my Apple Airport Extreme (5th Generation) router and Motorola Cable Modem that I placed on top of the Airport Extreme, slightly to one side. I plugged the fan into the Airport Extreme's USB port. The gooseneck is stiff enough to position the fan so that it blows over the top of the Airport Extreme and the side of the Cable Modem, cooling both.

It's not fancy, but it works nearly silently, does a very effective job of cooling, and the price is reasonable. My only wish is that the blades had a guard around them to protect against accidental breakage.
2412583
Very quiet!!  It has a sleek look, and seems to be moving the air very well.  I have an older Dell XPS laptop and it generates a lot of heat.  I really don't think it would still be running if I hadn't bought it a cooling fan years ago.  This cooling pad has little pop-up feet on the back so it will elevate your laptop.  There is a tiny blue light on each fan, so I'm thinking that might be a problem for some people if the fans are on at night, but it won't bother me because my laptop is in a small alcove out of sight.

I highly recommend this laptop cooler.
3402844
I replaced the 120mm "Shark's fin" fan that came with my Zalman Optima CNPS10X with this fan due to the old fan causing some noisy vibrations throughout the case. I can't believe how much quieter this fan is compared to the fan it replaced. It comes with 2 other connectors that will reduce the fan speeds and thereby reduce the fan noise but I think it is quite silent as it is. Also, it's got a 6 year warranty!
2253025
A clean, attractive unit that fits nicely on the desk behind my computer, but I will say I was expecting a quieter fan.  The unit has two speeds and the high setting is practically speaking, too loud if you are on the phone.  Low speed even is quite a bit louder than any computer cooling fan.  This fan is not a personal or small office fan unless you are okay with a constant whir in your ear.  The sound from it even pitches up and down when oscillating.  On the bright side, it is compact and kicks out a pretty strong breeze so for cooling, it is pretty good.  if you want quite though, stick with a small prop fan.
1429288
Very quiet and compact. With the fan on the lowest setting it moves a ton of air and is dead silent. I love this little fan.