Cooler Master 240L Core AIO CPU Liquid Cooler – 240mm Radiator, 2x ARGB PWM Fans, Patented Gen S Dual-Chamber Pump

This thing lowered my temperature by half! I love the way it looks, and fit without issue. The instructions were pretty clear and easy to get set up.

Kindle Customer · 2026-05-08 · via amazon

This is a great unit and all you have to do is carefully read the instructions and you will have a great cooler at a very good price that should last for years. I bought the 120L to replace a 120m. There was nothing wrong with the 120m, but it was installed for 10 years and it is important to keep the CPU cool or it will crash. Cooler Master writes their coolers last up to 8 years, so I was pushing it. I had to remove the 120m to install the 120L, and thought it would be the same, so I did not read the instructions, which was a mistake, as it was not going the way I expected. So, I read the instructions for the 120L, which is only photos, but if you look at the photos it is easy to install. If you ignore the photos, it will not be easy to install.

Norwood451 · 2025-10-25 · via amazon

This 240L water cooler from Cooler Master is replacing and Enermax made 120L RGB water cooler than served me well for approx. 2 years, but the pump developed a rattling noise that was very disturbing, and CPU temps were reaching 100C. I realized that the water pump was going to leave me. This was for an Intel 8 core I7 9700 CPU. I removed the Enermax and replaced with the Intel air cooler that came with the CPU. The system became quiet and temps stabilized around 50C which are normal. I ordered ths Cooler master that had excellent reviews. Very nice and quality built. Instl instructions were very easy to follow. CAme with the Creo fuse thermal paste that was fairly easy to apply, without any applicator. Straight from the tube. Installed everything and presto. System works very quietly and the temp stabilized around 32 C. the 2 fans are actually very quiet. Very happy with this new water cooler. The only con is the RGB. It's suited for 3 pin RGB headers while my motherboard, an Asus Z390-P model, comes with a 4 pin RGB header that is unusable. But this is a minor con. I will look for a 4 pin to 3 pin adapter cable, then this will work with RGB lights. Not an issue.

dinub1 · 2023-12-12 · via amazon

Worked great once installed. Was missing 1 screw and took awhile to find a replacement one that size. But it wasn't as hard to replace once I read Instructions after already watching alot of YouTube videos. Now PC is running real smooth

lgspence · 2026-03-26 · via amazon

I am still using the older version of this in another build that is run 24/7 for my security camera's and moderate gamming. It's been 4 years so far since installation and no issues or loss in cooling efficiency. I ran the computer overclocked around 60c-99c for 2 of those years..... Years later this newer model replaced it. Different fan and I'm sure different pump design/motor. The pump face design is practically identical. Installation is a breeze, and it looks like it belongs in my build. This is the BEST budget AIO water cooler. I would not recommend anyone go lower than this brand's quality for aio's because it is a liability. I've herd too many horror stories about cheap aio's leaking, bursting, or random pump fails all within a year. I would be devastated to came back to a wet ruined PC because I cut cheap on my aio. Fan n' heatsink is too loud, and a full-blown water-cooling system is too much maintenance. This device fall's perfectly in-between and the fact the previous version of this model is still running perfect in spite of being run at near max operating temps for extended periods of time and it being well past its life expectancy without warranty voiding maintenance being needed. I always keep power to pump at 50%-65%. Anything higher does not improve cooling and raises operating sound, and if it does cool better, it's by 1 degree.

Josh · 2025-01-04 · via amazon

MSI

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Newegg

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Newegg (Open Box)

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VALUE SCORE

Price

$20

Price

$49.85