Best Liquid CPU Cooler #1 Review In 2020

Are you looking for the best liquid CPU cooler? Heavy use of your computer’s CPU will eventually heat it up after several hours. This could be unhealthy for your CPU as it could create a range of problems from temporary malfunction to permanent failure. If you’re experiencing this, we’ve got you covered – read this review on the best liquid CPU cooler products in the market!

Liquid CPU cooler ModelImagePriceOur VerdictCheck Price
Alphacool Eisbaer AIO CPU Cooler with 240mm Radiatoralphacool eisbaer$$$$Editor’s Pick
CORSAIR HYDRO SERIES H100i v2 AIO Liquid CPU Coolercorsair radiator liquid CPU cooler$$$Best Budget Liquid CPU Cooler
Thermaltake WATER 3.0 Dual Riing RGB High Static Pressure Fans 240 AIO Water Cooling System CPU Cooler CL-W107-PL12SW-Athermaltake static pressure liquid cpu cooler$$$BEST LIQUID CPU COOLER DESIGN
ARCTIC Liquid Freezer 240, High Performance CPU Water Coolerarctic liquid freezer cpu cooler$$$$BEST LOW-NOISE LIQUID CPU COOLER

Computer cooling is essential as a way of removing the heat produced by CPU components. Generally, when the CPU is extremely heating up, its integrated circuits (which include the graphics cards, chipset, and hard disk drives) may be severely affected.

In the past, it was common to use a heatsink, which uses airflow to reduce the temperature. Computer fans have also become widely used with heatsink fans to drive hot air out of the system. These days, liquid cooling has become an industry standard for effective reduction of temperature in your CPU.


Over the years, CPU and graphics cards have been developed to work at better speeds. There is a need to add in more transistors to draw in more power and to have higher clock rates. However, this increase in speed also led to the generation of more heat.

Liquid cooling is basically a radiator for the computer’s processor. The cooling system enables the liquid to circulate through a heat sink that is attached to the processor.

As the liquid passes through the heat sink, the heat is then transferred from the hot processor to the cooler’s liquid. The hot liquid then leaves the radiator at the back of the case and transfers the heat to the air outside of the case. As this happens, the cooled liquid goes back through the system to the components and the cycle continues.

Check the differences of cpu air cooler vs a liquid cooler here.


Alphacool Eisbaer AIO CPU Cooler with 240mm Radiator–Best Overall Liquid CPU Cooler: Editor’s Pick

Alphacool Eisbaer AIO CPU Cooler with 240mm Radiator best liquid CPU cooler

Click here to see reviews and prices for the Alphacool Eisbaer AIO CPU Cooler on Amazon

Socket CompatibilityAMD 604/771/G34, AMD 939/AM2/AM2 /AM3/AM3 /FM1/FM2, Intel 1150/1151/1155/1156, Intel 1366, Intel 2011, Intel 775
Fan2x Eiswind 120
PumpAlphacool DC-LT 2600 Ultra low noise Ceramic
Radiator120mm x 2 (30mm thick)

This German-made device is a standard 240mm liquid CPU cooler with an integrated pump and CPU block that makes use of the standard G ¼” fittings.

The manufacturer has been known to be in business with ASUS, Sapphire, and Cooler Master, just to name a few. Instantly, this fact makes the Alphacool Eisbaer AIO CPU Cooler a fantastic tool to help address your CPU heating problem.

Alphacool Eisbaer introduces its extensible CBO closed loop in which the components have withstood several tests. The copper heat exchanger has been minimally modified compared to the Alphacool BexXxoS ST30. The pump is said to be a modification of an earlier cooling system, the Alphacool DC-LT.

Alphacool offers a wide array of cooling parts that allows anyone to build their own custom cooling loops. Its connectors make use of G ¼“ threads, which won’t give you much of a problem in terms of availability of parts. It is able to handle two 240mm radiators and a graphics card cooler.

What is great about this cooling system is that the AIO is not sealed. You can be able to swap fittings, tubing, and add in other components, thus allowing you to have a product that can grow along with your needs.

Tests have been conducted using Alphacool Eisbaer 240 and it was found to work very quietly. Reducing the pump speed by altering its power makes the effect almost unnoticeable. However, totally eliminating the noise may not be possible yet because a quiet CBO will not be able to work because of the fans.

Alphacool Eisbaer 240 gives a much higher level of performance than several other liquid CPU coolers. The expansion capability of Alphacool Esibaer 240 compares favorably with the conventional CBO closed loop. Installation-wise, though, it may take a little more time.

All in all, this liquid CPU cooler boasts of a sophisticated design, excellent cooling system and a user-friendly implementation of the expansion.


  • Fairly priced for its features
  • Highly customizable: The unsealed system allows you to swap fittings and other components to let the product grow with your needs
  • Offers an open loop system
  • Enormous cooling power


  • The fans have noticeable bearings that may make it visually unpleasant
  • There’s a need to constantly check the fluid level as well as the connections for leaks.

CORSAIR HYDRO SERIES H100i v2 AIO Liquid CPU Cooler – Best Budget Liquid CPU Cooler

CORSAIR HYDRO SERIES H100i v2 AIO Liquid CPU Cooler, 240mm Radiator, Dual 120mm PWM Fans, Advanced RGB Lighting and Fan Software Control best liquid CPU cooler

Click here to see reviews and prices for the Corsair Hydro Series H100i v2 on Amazon

Socket CompatibilityAMD sockets FM1, FM2, AM2, AM3
Fan2 high torque fans, 120mm x 120mm x 25mm; 2435 +/- 10% RPM speed
PumpAdjustable speed pump (may choose between Performance or Quiet Mode)
Radiator276mm x 125mm x 30mm

The CORSAIR HYDRO SERIES H100i v2 is the modified version of CORSAIR HYDRO SERIES H100i. Significant improvements have been done in terms of the fan’s airflow and speed, as well as the dimensions of the fan and radiator.

Despite having a lower RPM fan, CORSAIR H100i v2 produces less overall airflow in high pressure. There isn’t much of a change on the radiator, but there is a change in the layout of the radiator fin array.

The H100i v2 offers a similar experience to the earlier model, but a number of tweaks make this cooling system a great choice. One of the improvements that computer hardware experts would be happy about is that it offers a much better installation procedure along with a more streamlined set of power and data connectors. It is much simpler to attach using any of the pre-installed brackets.

Installing the dual 120mm fans is easy with pre-machined holes designed to allow screws to fit in with a little force applied to it.

One concern is the thickness of the radiator hoses, which some buyers found to be less flexible than it was on the previous model of the cooler.

The two fans can be either plugged into a splitter that is connected to the block or directly connected to the motherboard. You can choose whatever option depending on how you’d like to control the fans.

H1001 is a great improvement in a multitude of ways, and is by far a better version of the previous model. Extreme CPU cooling performance may not be achievable at this time since other aspects may be affected if we try to lessen the noise level.

However, it should be noted that this newer version has surpassed the expectations of the earlier H100i model. Best of all, it’s one of the most affordable liquid CPU coolers in the market.


  • Excellent performance compared to the previous model
  • Bracket installation has never been easier than the earlier version


  • Thickness of the radiator hose: Hoses may not cooperate well during installation
  • USP power plug runs right into the motherboard’s chipset heatsink
  • High static pressure fans generate noise

Thermaltake WATER 3.0 Dual Riing RGB High Static Pressure Fans 240 AIO Water Cooling System CPU Cooler– Best Liquid CPU Cooler Design

Click here to see reviews and prices for the Thermaltake Water 3.0 on Amazon

Socket CompatibilityMost Intel and AMD sockets, including mountings for Intel Socket LGA 2011/1366/1156/1155/1150
FanCircular 256 multicolored 120mm RGB radiator fans with high-static pressure design
PumpHigh reliability pump, 12V, 175mA
Radiator270mm x 120mm x 27mm

Thermaltake has received generally positive feedback when it comes to the company’s high-end AIO water coolers. The WATER 3.0 is one of its most popular liquid CPU coolers on the market today.

This particular model has massive improvements compared to previous designs, the most popular of which are the fan controller system and the RGB 120mm fans.

The 240mm radiator has two high-quality fans equipped with a copper water block and durable 326mm long hoses. It also offers support for all major sockets from both Intel and AMD camps.

Thermaltake Water 3.0 Dual Riing CPU Cooler is designed to meet the demands of gamers and computer hardware enthusiasts. It’s an all-in-one liquid cooler that has triple 120mm high static pressure fans and a smart fan cooler. You have the option to choose between 240mm and a 360mm radiator to control any increasing CPU temperature.

What sets this liquid CPU cooler apart from the rest is its impeccable design. This complete cooling system comes in lacquer black and is complemented by black hoses, cooler base, and pump with a black back. The logo has been perfectly placed on the heat sink, which gave the whole system a robust design.

The pump is connected to the mainboard (3-pin), while the Riing fans are connected to a smart fan controller that is controlled using a 4-pin PWM connection from the main board. The fans are seamlessly quiet and provide optimal static pressure.

One of the great characteristics of this cooling system is the smart fan controller. It has the ability to switch between 5 LED modes or disable and cycle through 256 colors. It has speed control options that allow you to reduce noise levels. This could be a little bit pricier than a similar cooling system, but the features and design more than make up for it.


  • Extremely cool liquid cooling system
  • Compatible with all modern sockets of AMD and Intel
  • Comes with a thermal grease that is applied to the CPU cooler
  • 6 cm hoses can bend safely
  • Radiator can be flexibly positioned in 2 adjacent 120mm fan brackets in the housing
  • High-quality and reliable pump


  • A little more expensive than other non-RGB liquid coolers of the same size

ARCTIC Liquid Freezer 240, High Performance CPU Water Cooler with Four 120 mm Low Noise Fans– Best Low-Noise Liquid CPU Cooler

ARCTIC Liquid Freezer 240, High Performance CPU Water Cooler with Four 120 mm Low Noise Fans, 240 x 120 mm Radiator best liquid CPU cooler

Click here to see reviews and prices for the ARCTIC Liquid Freezer 240 on Amazon

Socket CompatibilityCompatible with Intel Sockets 1150, 1151, 1155, 1156, 2011*, 2011-3* (*SQUARE ILM ONLY) and AMD Sockets AM2, AM2+, AM3, AM3+, FM1, FM2, FM2+
Fan4 x 120 mm, 500 - 1350 RPM speed
Pump2-watt power consumtion, with concentric CNC
Radiator240mm x 120mm x 38mm

This cooling system boasts of an excellent CPU cooling performance through Water Cooling Solution with 4 x F12 PWM PST fans, 38 mm deep radiator and a highly-efficient water pump. Compared with other AIO water coolers, the ARCTIC Liquid Freezer offers a surprisingly low noise level. Other cooling systems in the market may have a high-power radiator, but the downside of it is that the noise level could be a bit high.

It has four low-noise 120mm fans mounted on opposite sides of the radiator to provide absolute airflow. These fans have opposing functions that create excellent airflow: the first two fans act by pushing air through the radiator, and the second two fans pull the air through it.

It also has the ability to control the fan speed based on the temperature of the CPU. Each fan has extra-long cables with black sleeving and a PWM header.

The Arctic Liquid Freezer 240 has a 1.5” thick radiator that is situated between four fans. It uses a mountain ring and locking barbs instead of hooked ends on the metal ring’s tabs. The radiator is denser at about 20 FPI and thicker than the average. The tubing is very flexible.

It deals with up to 3000 watts TDP, at almost complete silence. It is compatible with Intel Socket: 1150, 1151, 1155, 1156, 2011*, 2011-3* (*SQUARE ILM ONLY) & AMD Socket: AM2, AM2+, AM3, AM3+, FM1, FM2, FM2+.

This device is a perfect example of how something as big as Arctic Liquid Freezer is surprisingly packed in a small box. The radiator, mounting hardware for both Intel and AMD, and the four 120mm F12 PWM fans all fit snugly into the packaging, which says a lot of about the manufacturer’s professionalism and attention to detail.

Price-wise, many would agree that this is a cost-effective cooling system.


  • Powerful but quiet cooling system
  • Oil capsule prevents lubricant leakage that leads to longer service life
  • Extreme cooling performance optimized for high airflow
  • Easy installation
  • Very affordable


  • Some people find the packaging too crammed and with minimal padding.


It’s easy to be overwhelmed by the several options for liquid CPU cooler today. If you are not careful enough in checking and understanding each of their specifications, you might end up wasting your money.

Advanced users always look for cooling systems that have removable dust filters, cable management options, and generally good size and long-term use.

Those factors may be important, but there are more specific features that you need to consider. Keep in mind that using a liquid cooling system requires additional space for the radiators. Ordinary CPU fan coolers would only need about 25mm of space and mounted properly. Meanwhile, radiators need an additional space of about 25-30mm to fit both the radiator and fans.

Your Buying Checklist

  • Radiator size: The bigger the size, the better. Big radiators reduce CPU temperature better and more effectively.
  • Noise level: While most manufacturers focus more on the speed of the fan, the noise that it creates may be too loud for some people.
  • Price point: Make sure that you are buying your money’s worth. Compare the technical details of each cooling system available prior to purchasing.
  • Power consumption: The more power that your radiator has, the more it consumes energy.
  • Fan speed: The faster the fan goes, the more efficient it can cool the heating components.

Air cooling has become a significantly important form of cooling due to cost and ease of use. As manufacturers develop smaller versions with the increase in customer demand, it will probably become more common in desktop computer systems in the future. It may not take very long before manufacturers develop the same for laptops.

Best Liquid CPU Cooler For You

Liquid cooling is preferred than air cooling because water transfers heat much more efficiently. Additionally, liquid cooling also makes your PC run quieter because the fans does not need to constantly run at a high RPM.

All-in-one liquid coolers are conveniently available in a wide array of sizes, and so there’s definitely something that’s going to be perfect for your needs. Apart from cooling your CPU, an efficient liquid CPU cooler can also be used to bring down the temperature of your GPU. Playing for long hours will definitely heat up the system, thereby affecting the performance.

The ultimate deciding factor in choosing the best liquid CPU cooler is your specific need for one. The use of a liquid CPU cooler is highly recommended on CPUs that are generally loaded with work frequently.

So what do you think? Did you decide which is the best liquid CPU cooler for your PC? Share your views with a comment below!

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