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Best AIO Liquid Cooler

A PC using a liquid cooler
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Traditional heatsink and fan CPU coolers are fantastic for keeping your desktop processors operating within an optimal temperature range, but if you want to do some overclocking and stress the CPU you'll need to invest in more complicated water cooling. Luckily, there are some fantastic all-in-one (AIO) kits from reputable brands that are simply plug-and-play. The NZXT Kraken M22 gets the job done, but so do the other options on this list. Take a look!

Staff favorite

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NZXT Kraken M22

Beastly cooler

This AIO could win out on the name alone, but it also performs well. The X62 packs a lightweight 120mm radiator and barely weighs anything. Throw in included support for the NZXT Hue lighting system and its CAM software for digital fan control and what you have is a cooler that will perform well and look good in your custom PC, all for a reasonable price.

Award winning

A black AIO liquid cooler from Arctic against a white background.

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ARCTIC liquid freezer II 240

Efficient performance

When choosing an AIO cooler, you want the pick that delivers the best features with a minimum of hassle on your end. The ARCTIC Liquid Freezer II 240 provides a stellar option with a max rotation of 1800 RPMs and features integrated cable management. The water loop has a quality seal and doesn't need refilling. It also comes with a whopping 6-year warranty and boasts 80% less overall power consumption. 

Best features

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ASUS ROG RYUO

OLED display

The ASUS ROG RYUO is quite the AIO cooler. Not only does it have a rather silent pump for quiet operation, but also ample headroom with the radiator and fan configuration. What makes this a special unit is the included OLED display located on the pump itself. You can display system stats here or even animated images.

Colorful design

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Cooler Master MasterLiquid ML360R

Serious performance

Cooler Master not only created an AIO that looks sleek and ready for an exquisite build but also included some serious headroom. You'll have no problem overclocking your CPU with the 360mm radiator setup, and there are more RGB lights than you'll know what to do with. The lighting on the ML360R can be configured through the MasterPlus+ software suite.

How do you choose an AIO?

Deciding what AIO to choose can prove a little daunting since most of them appear to be the same. If you need a small 120mm radiator AIO for your CPU and already have adequate case airflow, the NZXT Kraken M22 will be more than capable of handling even some moderate overclocking. NZXT offers different Kraken models, depending on your requirements.

When you have a powerful, multi-core processor that's kicking out some serious heat, you'll need to step it up with another cooling solution. Should the different Kraken models not be what you're looking for, the Cooler Master MasterLiquid ML360R is a great secondary pick.