Best 240mm AIO Cooler – Liquid Cooling Systems

Currently, there are dozens of great CPU coolers out there that you can choose from to keep your processor in peak performance. The best thing is that you don’t have to choose the biggest AIO cooler to maximize your CPU’s performance as there are great 240mm AIOs with high cooling performance.

These AIO coolers are incredibly compact and can perfectly fit in virtually any modern PC case. They are also reputable for their high overclocks even on some of the latest processor generations.

Apart from delivering an enhanced cooling performance, these 240mm AIO coolers also produce much less noise compared to most of the air coolers.

While the 240mm AIO coolers are great alternatives to most air coolers, not every one of them will be ideal for your PC build as they have some notable differences.

Compared to the massive air coolers, like 280mm and 360mm the 240mm AIO coolers occupy limited PC space allowing ample room to install taller RAM modules for maximum performance.

In this article, we are going to review some of the best 240mm AIO coolers that you can use for the ultimate cooling performance of your CPU.

Summary of the best 2 Best 240mm AIO Coolers

After doing extensive research, we choose the Corsair H100i Platinum as the overall best 240mm AIO cooler on our list. This cooler offers greater compatibility with a vast range of processors and performs pretty much better than the rest without sacrificing aesthetics.

For something cheaper with high performance, you can choose the Corsair H100i Pro as it features zero-RPM fans with minimal noise output.


  • What is an AIO water cooler?

An AIO Watercooler is a closed-loop liquid cooling system that eliminates the risk of leakages found on wrongly installed custom water coolers while providing unparalleled cooling performance than air coolers.

AIO CPU coolers come fitted with a pump that pumps the hot liquid to a radiator, where it’s then cooled by cool air from the fan, maintaining ideal CPU temperatures.

Considering their efficient cooling performance, AIO coolers are the best cooling systems for gaming PC units as well as those looking to overclock their processors.

  • Are AIO liquid coolers worth it?

AIO coolers like 240mm, 280mm, and 360mm are definitely worth investing in, especially, if you have a high-end system and you’d want to overclock or run CPU-intensive games or programs. AIO liquid coolers can efficiently handle heavy load so you don’t have to worry about your processor overheating or getting damaged.

  • Do AIO coolers come with liquid?

Yes. AIO coolers come pre-filled with a coolant that goes through the closed-loop tubing, connecting the pump and the water block to the radiator for cooling. Since an AIO cooler is a closed unit, the liquid cannot be changed or even topped up as it doesn’t experience evaporation like with custom setups.

  • Is custom loop better than AIO?

Well, both are great cooling systems.  However, the AIO deliver better performance and reliability, less maintenance and most importantly reduced cost.  On the other hand, the Custom Loop still provides better overall performance as well as enhanced visual appeal.

What makes AIO coolers better than custom loop is their closed-loop design that prevents them from experiencing leakages. They are also available in a wide range of sizes, so you can rest assured to find one that fits your PC’s size.

  • Which is better AIO or air cooler?

Both AIO and air coolers offer increased CPU cooling performance. But, the cooling system you choose to install onto your PC system will greatly depend on several factors such as compatibility, price, aesthetics, and how you intend to use your system.

  • Is liquid cooling better than air cooling?

Though both air and liquid cooling are great options, liquid cooling guarantees a more efficient and reliable way to keep your CPU cool as water transfers heat a lot faster than air.

In addition, liquid cooling makes your PC operate much quieter since the fans don’t constantly run at high RPMs.  The major drawback with using liquid cooling is the risk of leakages, though it rarely happens.

  • Does liquid cooling need maintenance?

The amount of maintenance required will depend mainly on the type of liquid cooling system you decide to use. For instance, AIO liquid coolers require little to no maintenance as they are designed closed-loop. This means you don’t have to refill or change the liquid or even constantly monitoring it. All you’re supposed to do is to regularly dust off the radiator and fan.

For custom liquid coolers, on the other hand, you’ll need to regularly change or refill the liquid, clean the loop, and even constantly monitor the different components to ensure everything is functioning as required.

  • Do I need liquid cooling if I don’t overclock?

If you’re not overclocking, a simple air cooler or even the stock cooler will serve you well. However, if you’re looking to maximize your processor’s performance, you might need a good liquid cooler to maintain your CPU within the ideal temperature levels. Moreover, with liquid cooling, you get a better experience as your PC will run a lot quieter.

  • Should I get an AIO cooler?

An AIO cooler is the best alternative to your stock CPU cooler or air cooler, if you’re planning to push your processor to the limit. Additionally, it offers greater compatibility, performs incredibly well, it’s more affordable and will boost your build’s aesthetic appeal.

  • Is liquid cooling quieter?

Compared to an air cooler, a liquid cooler delivers a much quieter operation as the fans will slow down or stop completely once low temperatures are achieved, significantly reduces the amount of noise.

  • Do liquid coolers leak?

Liquid coolers such as AIO coolers are designed with a closed-loop design, which eliminates any chance of the coolant leaking.  A damaged tube or poorly installing your custom liquid cooler, it may end up leaking and damaging your PC in the process.

Comparison table for the best Best 240mm AIO Cooler



Intel CPU Socket

AMD CPU Socket

Fan Speed

Noise Level

Corsair H100i RGB PLATINUM

10.9 x 4.72 x 1.06 inches

LGA 115x/1366/ 2011/2011-3/ 2066

FM1/FM2/AM2/AM3/AM4/ TR4

2400 RPM


Corsair Hydro Series H100i

10.87 x 4.72 x 16.81 inches

LGA 1150/1151/ 1155/1156/1366/ 2011-3/2066


2400 RPM


Cooler Master MasterLiquid Dual SickleFlow

10.90 x 4.70 x 1.10 inches

LGA 2066/2011-v3 /2011/1151 /1150/1155/ 1156/1366

AM4 / AM3+ / AM3 / AM2+/ AM2 / FM2+ / FM2 / FM1

2000 RPM


Cooler Master MasterLiquid Dual Dissipation

12.87 x 11.02 x 12.8 inches


AM4/AM3+/AM3/AM2+/AM2/ FM2+/ FM2/FM1

2000 RPM



7 x 14 x 7.7 inches




2200 RPM


NZXT Kraken X53

12.09 x 8.35 x 5.39 inches

LGA 1151/1150/ 1155/1156/1366/2011/2011-3 /2066

AM4, TR4

2000 RPM


DEEPCOOL Captain 240 RGB V2



1800 RPM


CORSAIR Hydro Series H100i v2

10.87 x 1.18 x 4.92 inches

LGA 115x/1366/ 2011/2011-3/ 2066


2435 RPM



9 x 1.89 x 9 inches

LGA1150/1151/1152/1155/1156/1366/2011/2011-3/ 2066


2,700 RPM

37.6 dB

Best 240mm AIO Cooler

1. Corsair H100i RGB PLATINUM 240mm AIO Cooler

best 240mm aio liquid cooler

Topping our list is Corsair’s H100i Platinum AIO cooler that strikes a perfect balance between performance and aesthetics.

To begin with, this amazing all-in-one cooler boasts a whopping sixteen independently programmable RGB LED’s that create a stunning lighting effects to boost your build’s aesthetics. Using Corsair’s software, you can easily customize the cooler’s RGB lighting to your liking for the best experience.

When it comes to performance, this AIO cooler features two magnetic levitation 120mm PWM fans with RGB lighting for a colorful experience. These fans are designed to run at speeds of up to 2400RPM, producing high static pressure for enhanced airflow and maximum cooling performance.

The pump is also fitted with RGB lighting and uniquely designed for maximum liquid displacement while producing minimal noise. The 240mm radiator offers a large and thermally optimized plate for faster and greater heat transfer and enhanced cooling.

Moreover, you can adjust both the pump and fan speeds to achieve the best cooling performance. What’s more, this cooler also features a ZERO RPM mode that allows completely stopping of the fans once low-temperatures are attained, which eliminates fan noise entirely.

Another great thing with this AIO cooler is its compatibility with the latest CPU sockets, allowing you to pair it with your AMD as well as Intel processor. It also includes a mounting system to easily and securely mount it onto your CPU.

2. Corsair Hydro Series H100i Pro 240mm Liquid Aio Cooler

Coming second on our list of the best 240mm aio cooler is another superb AIO cooler from Corsair, the Hydro Series H100i Pro RGB. This is a relatively cheaper option that delivers incredible performance similar to that of most of the high-end air coolers out there.

For the design, this 240 AIO cooler comes fitted with stunning RGB lighting that you can customize using the iCUE software to boost your build’s looks.

When it comes to the performance, this liquid cooler features two 120mm PWM fans designed with magnetic levitation for increased airflow pressure. Each of the fans can deliver speeds of up to 2400RPM with minimal noise levels, ensuring a quieter and more efficient cooling operation.

The pump performs quite well and has a pre-applied thermal paste for efficient operation. It’s compatible with Intel CPUs and also includes a bracket that allows you to pair it with AMD processors.

Not only does the software allow you to customize the RGB lighting effects, but you can as well control the speed of the fan and pump to maximize the cooler’s cooling potential. There are also several pre-set modes that allow you to precisely control fan speeds or even bring them to a complete stop at low-temperatures.

Overall, the Hydro Series H100i Pro is a great budget 240mm AIO cooler that’s build to last long and keep your CPU in top performance.

3.  Cooler Master MasterLiquid Dual SickleFlow

The CoolerMaster ML240L V2 is another great 240mm closed loop AIO cooler that delivers vibrant RGB lighting and an exceptionally quiet operation.

This AIO cooler boasts a dual-chamber pump setup for enhanced volume capacity and better liquid displacement. The 240mm low-resistance radiator provides a greater surface area for increased heat conductivity and efficient cooling performance.

The cooler’s main highlight feature is its two 120mm fans that come with the company’s latest SickleFlow RGB design that rotate to speeds of up to 2000RPM. The fans are fitted with rifle bearings on the blades and have an innovative frame design that ensure static airflow and reduced noise output.

So, you can rest assured to experience a much quieter and smoother operation even while running CPU-intensive programs or when playing high-demanding games. The cooler’s tubing is sleeved with FEP material for enhanced durability, so you shouldn’t worry about leakages while using this closed-loop liquid cooler.

It also comes with an RGB controller that you can use when you want to customize the lighting effects.

The mounting kit included is compatible with a vast range of processors including Intel and AMD CPUs, so it’s quite easy to install it on your PC.

4. Cooler Master MasterLiquid Dual Dissipation

The CoolerMaster MasterLiquid ML240L is a superb AIO cooler for anyone that wants flashy RGB lighting on their PC builds without sacrificing on the performance.

This AIO cooler’s main feature is its independently customizable RGB LEDs on both the fans and pump as you can fully adjust the lighting effects using the CAM software for the ultimate experience. It also comes with an ARGB controller that you can use to customize the RGB lighting even when not connected to the RGB motherboard.

This AIO cooler comes with a low resistance240mm radiator for a smoother liquid flow, ensuring your processor is cooled faster and more efficiently. The dual-chamber pump design ensures better performance and improved longevity.

The Masterfan design of the two fans promotes better airflow and increased pressure for faster and more efficiently cool down the radiator. What’s more is that this cooler is incredibly easy to install onto your PC’s motherboard.

5. EVGA CLC 400-HY-CL28-V1

This closed-loop AIO cooler is uniquely made super-easy to install yet powerful enough to handle an overclocked processor.

This AIO cooler has a great closed-loop build quality that increases its durability and comes designed with sleeved tubing that not only makes it look great but also minimizes the chance of the liquid leaking. It is also designed to support the latest CPUs including Intel and AMD models.

The cooler’s durable tubing allows for proper flow of coolant between the radiator, pump and waterblock. The radiator’s copper base plate allows for faster and more efficient heat transfer and, in turn, better CPU cooling.

The cooler’s radiator also comes fitted with two powerful 140mm fans designed with Teflon Nano Bearing and a curved housing for better airflow and more quiet operation.

You can configure this AIO cooler’s RGB lighting to notify you the CPU’s temperature levels or even synchronize it with other RGB components in your system for enhanced aesthetics.

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6. NZXT Kraken X53

The NZXT Kraken X53 is the best choice for anyone looking for a high-quality and great performance AIO cooler with an easy to customize RGB lighting.

Just like other NZXT’s liquid coolers, the Kraken X53 features a nice infinite mirror that delivers vivid RGB lighting, making it a perfect addition to any PC build. It’s also compatible with NZXT’s CAM software that lets you to easily customize the RGB lighting to your liking.

For the performance, the Kraken X53 performs exceptionally well considering that it comes equipped with two 120mm Aer fans that can spin at speeds of nearly 2000RPM while maintaining the noise level to a minimum.

Through the CAM’s intuitive interface, you can also control the cooler’s pump and fan speeds, allowing you to achieve the best cooling performance.

You may also love this cooler for its straightforward installation process and also the fact that you can adjust the pump head position to make way for taller RAM modules.

7. DEEPCOOL Captain 240 RGB V2

Next on our list is the DEEPCOOL Captain V2 that comes armored with a powerful and reliable pump and dual fans with RGB lighting for improved aesthetics and cooling performance.

This AIO cooler is designed having Deepcool’s iconic Anti-leak Technology that helps it attain an automated pressure balance. This is especially crucial as it hugely improves the cooler’s operation safety, allowing for a more efficient cooling performance.

The radiator is designed with a large copper plate at the base for an accelerated and more efficient thermal conductivity. There are also two PWM fans rated to 1800RPM and dual chambers for maximum liquid displacement and improved cooling capacity.

The highlight of this AIO cooler is the independently customizable RGB LEDs on the waterblock and fan. Moreover, you can easily customize the LEDs’ lighting using the wired controller or through the motherboard software.

The cooler also comes pre-installed with spring screws that make installating it onto your motherboard super easy.

8. CORSAIR Hydro Series H100i v2

As the third CORSAIR AIO cooler on our list, the Hydro Series H100i v2 is a quality 240mm AIO liquid cooler that provides great heat dissipation for efficient cooling of highly overclocked processors.

This compact AIO cooler boasts a 240mm large radiator that provides a large enough surface area for maximum heat transfer and better cooling performance. It also comes equipped with two high torque 120mm fans that deliver high static pressure and better air flow, which is needed for faster and better cooling of the radiator.

While the fans can spin to extremely high speeds of up to 2435RPM, they produce less amount of noise, giving you the best experience while using your PC.

Like other Corsair coolers, this AIO cooler is designed compatible with the iCUE software that allows you to conveniently monitor the CPU’s temperatures, regulate fan and pump speeds, and customize RGB lighting.  Equipped with mounting brackets, installing this cooler onto the motherboard is quite easy.

9. Asus ROG RYUO

The Asus ROG RYUO cooler is a nicely built and overall durable 240mm AIO CPU cooler that offer increased heat transfer and flow rate for efficient CPU cooling.

To start with, this AIO liquid cooler features an OLED display that allows you to conveniently monitor its performance to ensure everything works perfectly. It’s also designed with Aura sync compatible for a blended RGB lighting effect, hence delivering stunning aesthetics.

Additionally, through the Aura software you can synchronize the lighting with other enabled components on your system for an even better aesthetic appeal. This cooler is also designed to offer better compatibility with a wide range of Intel and AMD sockets.

The radiator comes fitted with an ROG fans that deliver optimized airflow and static pressure for an improved cooling performance.


As you’ve seen from our review, there are several high-performance 240mm AIO coolers that you can choose from for your CPU.  Our list includes the best 240mm AIO coolers there is out there that outperform even some of the best air coolers.  No matter the one you choose from our list, you can rest assured it will deliver outstanding cooling performance even with your overclocked CPU.