
Best selling Water cooling radiators
Here's a ranking of the best products in this category. To give you a quick overview, we've also added some key information about the products.
1. Hailea Ultra Titanium 200 HC150
This chiller essentially replaces the radiator, as it cools the water to a temperature set by you. Temperatures as low as 4 °C are possible, but please note that condensation may occur due to the temperature difference. The temperature can be set in increments up to 28 °C via the display. Corresponding insulation accessories for hoses and CPUs are also available. Alternatively, the chiller can be set to just below room temperature to avoid the issue of condensation.
With the low water temperatures, unprecedented overclocking possibilities arise. The lifespan of your components is significantly increased. Additionally, this system is also interesting for no-noise applications, as the chiller can be placed in another room. It is recommended to integrate the chiller as an additional cooling source into a system alongside an existing radiator. This way, you can turn off the regular radiator as needed (for overclocking, benchmarking, during hot summer days, etc.), and the chiller will take over the cooling.

2. Hailea Ultra Titan 500 HC300
This continuous flow cooler essentially replaces the radiator, as the water is regulated down to a temperature set by you. Temperatures of up to 4°C are possible, but please note that condensation can form due to the temperature difference. The temperature can be set in single steps up to 28° C via the display. Appropriate insulation accessories (for hose and CPU) are also available. Alternatively, the chiller can be set to a value just below room temperature to avoid the problem of condensation.
Due to the low water temperatures, unimagined possibilities for overclocking are given. The service life of your components is increased many times over. Furthermore this system is also interesting for No Noise applications, because the chiller can be placed in another room. We recommend integrating the chiller as an additional cold source in a system next to an existing radiator. So you can switch off the normal radiator as needed (overclock / benchmark / midsummer etc) and the chiller will take over the cooling.
Which aquarium size does my continuous flow cooler cool?
The manufacturer's information is as follows:
Model / litre specification:
HC-130 / 50-100L
HC-150 / 50-200L
HC-250 / 100-300L
HC-300 / 100-400L
HC-500 / 200-800L
HC-1000 / 300-1000L
HC-2000 / 400-1500L
Here we would like to point out that the manufacturer's specifications were created under optimal conditions. For example, the temperature behaviour can vary considerably due to the insulation of the pool, the radiation of the lamps or the sunlight. Therefore we recommend to choose a larger model when reaching the upper limit of the litre values.
Note on compatibility: The chiller is supplied with connections for 1 inch hose (inner diameter approx. 19 to 20mm). The delivery includes 1 pair of straight and 1 pair of 90° angled connectors. To use the Chiller with standard connections we recommend art. 37018 (for G1/4) and 37019 (for G3/8).

3. Alphacool NexXxoS XT45 Full Copper 420mm
Alphacool NexXxoS XT45 Full Copper Cooling System - Black
Product Description:
The Alphacool NexXxoS XT45 Full Copper Cooling System is made of high-quality steel, brass, and copper. It comes with 12 hexagon socket screws (M3 x 30 mm), 12 hexagon socket screws (M3 x 35 mm), and 4 threaded plugs.
Dimensions:
- Width: 14.4 cm
- Depth: 46.8 cm
- Height: 4.6 cm
- Weight: 1.892 kg
Features:
- G1/4" threads
- Compatible fan diameter: 140 mm, 420 mm
- Color: Black
- Mounting kit included.

4. Hailea Continuous cooler Ultra Titan 500 - White Special Edition
The Ultra Titan 500 flow cooler from Hailea is a highly advanced cooling device specifically designed for water cooling systems and aquariums. Featuring an innovative titanium heat exchanger, this model offers excellent cooling performance and is ideal for applications such as cold water therapy and cryotherapy. The White Special Edition is characterized by a modern design and the use of durable materials that ensure a longer lifespan. Additionally, the cooler is suitable for continuous operation and operates at a low noise level, making it a practical choice for various environments. The ability to reach water temperatures as low as 4 °C makes it particularly versatile. The flow cooler comes with a comprehensive accessory package that facilitates installation and enables optimal use.
- Titanium heat exchanger for optimal cooling performance
- Low noise level, ideal for continuous operation
- Suitable for cold water therapy and cryotherapy
- Reaches water temperatures as low as 4 °C
- Extensive accessories for easy installation.

5. Corsair NAUTILUS 240 ARGB White, 240mm Radiator, Liquid CPU Cooler
The Corsair Nautilus 240 RS ARGB is a liquid cooling system for processors that enhances thermal performance while keeping noise levels low. Equipped with two 120mm ARGB fans with a rotation speed of 2100 RPM, this cooling system delivers an efficient airflow of 74.4 CFM, ensuring optimal cooling for demanding tasks. Its advanced features, such as support for Pulse Width Modulation (PWM) and Air-Guide technology, provide reliable performance and allow customizable lighting effects through the Corsair iCUE software.

Corsair NAUTILUS 240 ARGB White, 240mm Radiator, Liquid CPU Cooler
120 mm
6. Hailea Ultra Titan 300 HC250
This chiller essentially replaces the radiator, as it lowers the water to a temperature set by you. Temperatures of up to 4 °C are possible, but please note that condensation may occur due to the temperature difference. The temperature can be set in increments up to 28 °C via the display. Corresponding insulation accessories (for hoses and CPU) are also available. Alternatively, the chiller can be set to just below room temperature to avoid the issue of condensation.
With the low water temperatures, unprecedented overclocking possibilities arise. The lifespan of your components increases significantly. Furthermore, this system is also interesting for no-noise applications, as the chiller can be placed in another room. We recommend integrating the chiller as an additional cooling source into a system alongside an existing radiator. This way, you can turn off the regular radiator as needed (for overclocking, benchmarking, high summer, etc.), and the chiller will take over the cooling.

7. Alphacool NexXxoS XT45 Radiator Block
The NexXxoS XT45 radiator block from Alphacool is a highly advanced solution for water cooling systems, based on uncompromising material selection and innovative technology. With a housing made of pure copper that encompasses both the chambers and the water channels as well as the cooling fins, this radiator offers superior thermal conductivity and ensures efficient cooling. The special design with a fin density of 11 FPI allows for optimal airflow utilization, even with low-speed fans. This makes the NexXxoS XT45 an ideal choice for high-performance cooling applications where efficiency and performance are crucial. The thoughtful design with small flaps on the cooling fins enhances air circulation and increases cooling performance, while the radiator also provides an appealing aesthetic. Weighing 1040 grams and featuring a robust construction, this radiator is both durable and powerful, making it a preferred choice for enthusiasts and professional users.
- Pure copper for optimal thermal conductivity
- Special fin density of 11 FPI for low air resistance
- Integrated flaps to improve air circulation
- Robust construction with a weight of 1040 grams.

8. Alphacool NexXxoS XT45 Full Copper 480mm
These models are among the first radiators that have really earned the title "Full Copper". All main elements, not only the fins and channels, but also the antechambers are made of copper. This already brings an increase in performance due to the material, where other radiators fall by the wayside. The internal design is at eye level with radiators from other manufacturers and separate antechambers clearly define the path of the coolant. A high flow rate increases the cooling capacity in the complete system. A flat end chamber also leaves more space during assembly, as the overall length is thus shorter. Freedom during assembly is one of the central points on which the development department at Alphacool has concentrated. At the inlet and outlet of the antechamber there are 3 possibilities each (not with the NexXxos ST30) to position the connection. Fewer angles are required, which in turn increases the flow rate and provides more mounting options. Therefore, this radiator can be installed even in tight enclosures where an internal installation would otherwise not be possible.

9. Watercool Heatkiller RAD 360-S Radiator - Stainless Steel
360 mm radiator with 30 mm thickness, supports up to six 120 mm fans in push/pull mode. Features fins and channels made of copper, exclusive design with stainless steel housing, compact dimensions, and high-quality workmanship. Includes 2x G1/4 connectors.

10. EKWB EK Quantum Surface P280M X-Flow
280mm radiator with 44mm thickness, fins and channels made of copper, exclusive modding design, 8 G1/4 connectors, high quality finish, suitable for custom loops.
