When I got it, it was easy to install, cooled my processor perfectly, and didn't produce any undue noise

I put in the replacement and less than a day it started making the rattling noise again.

Installed this cooler on a new build and first thing I noticed was the pump making a funny noise.

the tubes are strong and the fans are quiet but the pump makes an annoying clicking noise.

Great watercooler but fans making a weird noise

I HIGHLY recommend you set the fans to H100i Temperature (water), this will significantly reduce the noise from the unit

No audible noise compare to old heatsink/fan tech.

Corsair sent me a replacement fan because I thought it was just a problem with one of the fans, but shortly after I noticed both fans were making the loud rattling noise and getting worse over time.

You will need to purchase two Corsair ML120's to get rid of the inevitable buzzing noise these fans create.

If you use Corsair Link and change the Profile on Quiet Mode, the fans become quieter, the same noise as a SP120 Quiet Edition from Corsair

I had to buy fans, because it brings default had an annoying noise; perhaps a manufacturing defect.

Installed and have a defective pump that makes a loud squealing noise

This is only 4 stars as I have a rattling/buzzing noise on

A fair bit of wires from the pump that can make it a pain to manage.- Fans are good, but since I had Noctua fans laying around I decided to swap the stock ones, resulting in better temps and less noise

Very Nice, I bought a core i7 7700k and it's always is cool and smooth, no noise very recommended

I noticed a weird buzzing rattling noise, I turned my computer on and off, I thought maybe some air bubbles got inside, and tapped on the tubes

One of the fans produce a rattling noise at high rpm

And 8 years before the coolant pump started making enough noise to cause me worry.

Would have been a five-star review, seeing as how the product keeps the CPU temperatures fairly low, HOWEVER, I am giving it two stars out of five because I paid over one hundred dollars (plus shipping) for the H100i v2 and a mere two weeks into use, one of the fans has developed a rattling noise related to the fan bearing

Too late to return now as the fans started making terrible noise right outside the month window.

Worked great for seven months of daily use, and then it sat idle for a month, and when I turned it back on the pump started making clicking and grinding noises and my CPU overheated very quickly without much warning

But as soon as I powered up my PC, one of the included 120mm fans on the radiator started to make an awful clicking noise

One of the fans make a terrible noise when at full speed during gaming

After reading some reviews I was dreading the noise that people complained about, mine makes no such loud noise

After receiving the brand new replacement unit and installing it into my PC I noticed a very annoying rattling/grinding noise coming from the pump that the previous unit didn't make

Purchase made in July 2017, by the end of November, 4 months hard, the best cooling system model 240mm quieter fans, but with less rebolutions, wow less noise, with wider radiator, I waited after your warranty of 5 years will be damaged , but that 4 months hard, is more than half a year, the pump started to make a click sound faster and stronger, until it turned off the mobo, because the temperature rose to over 50C, and so it happened for 3 weeks sometimes the sound was not

The magnetic fans are made of high-quality materials- Great performance for the price in terms of temps- RGB is easily customizable and is brightCons:- Fans vibrate a bit and can be a bit annoying for some (if you don't like the fan noise) but it's nothing

The fan is loud but not the weird noise.

The only way to deal with this God-awful noise is to run a CPU-intensive program until it stops (Prime95, GTA5, etc.)

This cooler is making a loud pulsating humming noise that changes pitch every few seconds

I had a older Corsair H110 and its wroked but made a very bad noise after low RPM's for a lengh of time but i am happy to say this one doesnt have that issue at all

Pain in the ass to install solo, fans can make noise under load

This cooler is making a loud pulsating humming noise that changes pitch every few seconds

When you mount this cooler at the top of Corsair 760T case, the fans create a significant vibration and noise

At higher speeds you will get grating clicking noise.

I got this 5 months ago, but all of a sudden it started making a weird noise one day, it was quiet when I turned my computer on, then a 10 hours

For some reason mounted at that position causes a very loud and unbearable rattling noise.

The first unit started making an awful grinding noise whenever the computer was left idling

It produces a slight grinding noise in "Quiet" mode, and noticeably louder grinding noise in "Performance" mode

I do not recommend this product if you are bothered by loud noise or want a cool cpu.

This product is great for most CPU,s