AIO liquid CPU coolers are sealed water-cooling units that carry heat from the processor to a radiator, and they suit gamers, builders and workstation users whose CPU runs hot under load. Our range of over 200 models covers all-in-one liquid coolers and a few liquid cooling kits from Thermaltake, NZXT, Zalman, Deepcool and others.
How to choose an AIO liquid CPU cooler
Radiator size. Radiators are described by the fans they hold: 120 mm, 240 mm, 280 mm or 360 mm. Most coolers in our range come with two or three 12 cm fans, which usually means a 240 mm or 360 mm radiator. A 360 mm unit copes better with high-core-count processors, while a 240 mm unit is usually enough for a mid-range CPU.
Case and socket compatibility. Check that your case can take the radiator at the front, top or rear, and that the tubes and fans leave room for your memory modules. Then confirm that the mounting kit supports your socket, for example Intel LGA 1700 or AMD AM5.
Noise and fan speed. Maximum fan speeds in our range mostly fall between 1800 and 2600 RPM. Higher speeds remove more heat but are louder, so look for PWM fans that your motherboard can slow down at idle. Pump noise also counts, as a pump that hums is noticeable in a quiet room.
Lighting and control. Many coolers in our range have multi-colour illumination, and black and white finishes are both available to match your build. Check that the lighting connects to a header on your motherboard or works with the maker's own software, otherwise you may end up with a second controller in the case.
AIO liquid CPU cooler brands we carry
- Thermaltake: the largest brand in this category in our range, known for the Floe series with addressable RGB fans in several radiator sizes.
- NZXT: maker of the Kraken series, known for pump heads that carry a customisable screen on many models.
- Deepcool: known for the LT and Castle AIO series, built alongside a long line of air coolers.
- ASUS: known for the ROG Ryujin and Ryuo coolers, which add pump-head displays and tie into ASUS motherboard software.
- Corsair: known for iCUE software, which controls fans, pump and lighting from one place.
- Cooler Master: one of the longest-established cooler makers, with the MasterLiquid series.
- be quiet!: German brand focused on low noise, with Pure Loop and Silent Loop coolers using its Silent Wings fans.
- MSI: offers the MAG CoreLiquid and MPG CoreLiquid series, styled to match MSI motherboards and Mystic Light lighting.
Also in our range: Zalman, GAMDIAS, Montech and AZZA.
AIO liquid CPU cooler FAQ
Is an AIO liquid cooler better than an air cooler?
Not always. A 240 mm or 360 mm AIO usually cools a hot, high-core-count processor better than a mid-range air cooler and frees space around the socket. A good large air cooler can match a smaller AIO and has no pump that can fail, so the choice depends on your CPU and case.
What radiator size do I need?
A 240 mm radiator suits most mid-range processors, and a 360 mm radiator is the safer choice for high-end or heavily overclocked CPUs. Radiators of 120 mm are mainly for small cases or lower-heat chips. Always check which sizes your case supports before ordering.
Do AIO coolers need maintenance or refilling?
No, an AIO cooler is sealed and filled at the factory, so it needs no refilling. The only routine job is to clean dust from the radiator and fans. The pump is a moving part and will wear out eventually, so a cooler that starts to get noisy or hot should be checked.
Will an AIO cooler fit my case and CPU socket?
It will fit if your case has a mounting position for the radiator size and the cooler's kit lists your socket. Check the case specification for front, top or rear radiator support, and the cooler's specification for Intel and AMD sockets. Modern coolers generally cover current sockets, but older or very new platforms should be confirmed first.
