Cooler Master 240 Atmos High Performance Close-Loop AIO Liquid Cooler, R9|i7 Dual Chamber Pump, Customize Cover, Sickleflow Edge PWM, aRGB Lighting, AMD Ryzen AM5|4, Intel LGA 1851|1700 Platform

Fantastic cooler. Monitored temps for the first few weeks and it keeps my Ryzon 7 cool even when over clocked. Extremely quiet and functions perfectly. It is not bulky so it fits easily in my case. I highly recommend this cooler.

So far an amazing cooler that looks absolutely stunning in a white build, great for small builds and easier cools my CPU with no issues, if anything, this increases the available performance and is a great value for its money.

Finally received this AIO and installed. It is pretty simple and hard to not get right.The temps are superb. HWinfo registered a minimum of 29C on 1 CCD of my 9950x3d during day and typical temperatures while office work are 30-35C.The main event is AIO pump which is SILENT, you really need to put ear next to it almost in a couple inches to hear anything and the fans are really great to. You don't hear them most of the timet, but then you do - they work great.

This cooler works great. I'm coming from TWO EK CR240 coolers that developed grinding pumps within a month. Installing this, the pump is dead quiet, and using the same fans (Phanteks T30) and same thermal paste across all of them, this runs about 5c cooler than the EK coolers. It could be the large difference is due to the pumps, which seem to have been defective. Either way, this cooler is dead silent and cools well. You don't have to use all of the RGB nonsense it comes with and deal with a big nest of cables, either. If you just want to install the cooler without fan RGB it's just the PWM pump header and the fan header on the mobo. You can plug the pump head in to any 2nd gen RGB plug on the motherboard, too. It's a very clean install overall.

I used this in a sff build of mine and I was definitely surprised by its pump performance, compared to the be quiet pure loop 2 it was about 7 degrees cooler however the stock fans on this are just terrible and whine super loud when their on max rpm, I replaced them quite quickly with some lian li

keeps it cool. Important to keep the paste thick when putting it on the CPU. It will flatten on its own. I first spread it too thin and it had hot spots causing problems, thinking it was the graphics card.

I can't recommend this item off any performance, but instead based off the customer service (or lack of) capacity of Cooler Master the company. I ordered the MasterLiquid 360 Atmos Stealth back in April, had a delay with installation due to moving, and got around to attempting installation in July. I found one of the AMD mounting screws had a manufacturing defect and would only screw halfway into the backplate before seizing up. I was also not willing to use tools and risk damaging my motherboard or backplate when the other 3 screws were capable of being hand tightened all the way into all 4 holes of the backplate. Cooler Master has zero capacity to track warranty submissions on their website, they haven't responded to either my submission through their website at the beginning of July, a direct email to their support email mid-month, nor have representatives available at the phone during their core business hours. I am going to keep trying to get a hold of their support to see if I can get the screw replaced, but for now I can't recommend touching this product.

I switch to the atmos from kraken due to the krakens horrible pump whine. The atmos has barely any noise from the pump. Setup was easy and everything was organized well. Excellent aio overall and fits well in the LIAN li a3. Just wish the software was more usable (useless for the 240 version) and more options to control by liquid temp. I swapped the fan with my a12s cause they are quieter and I don’t want rgb.