be quiet! Silent Wings 4 140mm PWM fan, optimized fan blades, extraordinary high performance, extremely high air pressure, virtually inaudible, 6-pole fan motor, fluid-dynamic bearing, elegant look

I admittedly returned mine as I realised I needed more fans, and these are too pricey, but you get what you pay for and these are awesome. Extremely quiet, no vibrations, no undertones, no squeaking, no buzzing.They can be audible at max speed but they are otherwise almost silent. The build quality is impressive too and they look imposing in person. I cannot comment for airflow but I definitely felt a good gust of air when i turned them on

Very good pc fans I have upgraded from pure wings 2 so much quiet

lives up to its name hardly any noise until it ramps up to high output but even then it is still tolerable

Have had these for over a year now. Replaced some stock noisey case fans, and they truly are quiet.

The case is much quieter now. Came with a bunch of useful accessories as well.

I ordered silent wings 4 and based on given product pictures it said it have fan speed switch on back of the fan but the one I received came without the speed switch.

I’ve had it with this company, it started with a power supply I had from them, a Dark Power 12 Platinum, noisiest power supply I’ve ever had!And now these, I thought I’d give them another chance, but I wish I hadn’t.Even at £5 a fan which I somehow got them for, they are absolutely horrible.By far the noisiest ‘silent’ fans I’ve ever had.I had 4 of these, and all 4 made really annoying grinding noises even at low RPM.They have “swappable corners” and “rubber fan mounts” to reduce noise and all this other pointless stuff that makes absolutely no difference, they are loud and a complete waste of money, do not buy them.Buy Noctua, Arctic or Razer instead.Avoid at all costs!