Liquid Freezer II 420 RGB

Multi Compatible All-in-One CPU Water Cooler with RGB

| LGA1700 Kit included

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Future-proof compatibility

AMD is expected to release the AM5 socket, the successor to its popular AM4 platform, at the end of 2022. Since all mechanical dimensions remain identical, ARCTIC guarantees compatibility with our coolers on AMD's new processors.

In addition, all coolers shipped by ARCTIC are already compatible with Intel's Alder Lake LGA1700 processors.

Coolers purchased from resellers may have been shipped without the corresponding accessories. In this case, please contact ARCTIC customer support.

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All Liquid Freezer II models shipped by ARCTIC are compatible with Intel's Alder Lake LGA1700 processors ex-works.

Water coolers purchased from resellers may have been delivered without the necessary accessories. In this case, please contact our customer support.

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The Liquid Freezer II RGB combines the efficient, award-winning PWM pump of the Liquid Freezer II with new RGB fans optimised for static pressure. This gives you a whole new aesthetic with extremely low noise and equally low temperatures.


Unlike many of our competitors, we went to great lengths to develop the water pump. The result is greatly reduced humming and higher efficiency. Like the other components, the pump is also PWM controlled. This leads to a significantly lower noise level at low and typical loads, but also to much lower power consumption, with a maximum of 0.9 W at no load, 2.5 W under typical load and a maximum of 5.3 W under full load for the entire AiO.


Unlike most other all-in-one liquid cooling manufacturers, we rely on 38 mm thick radiators with a high fin density. This means that a larger amount of water can be used in the circuit, and the cooling surface can be significantly increased.

Water has a much higher heat capacity than aluminum or copper. This leads to a slower and up to 5 °C lower temperature increase in the temporary turbo mode of modern CPUs.


Small fans have a reputation for being particularly loud and not very durable. However, we have developed a quiet and durable diagonal fan especially for the Liquid Freezer II and are 100 % convinced that this 40 mm fan is just as durable as our other case fans. In the unlikely event that it should fail, our customer service team will send you a replacement free of charge and easily, without a need to replace the entire unit.

The fan is PWM-controlled and can cool your voltage transformers and the base area almost inaudibly by up to 15 °C. This is especially effective in overclocking scenarios, inadequate VRM cooling or in housings with poor airflow, thus permitting continuously high loads. If sufficient VRM cooling is available, it can be switched off at will.

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The fiber-reinforced, long EPDM tubing of the Liquid Freezer II enables installation even in large cases and effectively prevents the cooling liquid from evaporating, so that you do not have to worry about refilling the compact water cooling system.

It also hides the cables of your radiator fans thanks to sophisticated cable management. So you only have to connect two plugs to the mainboard, saving valuable time during installation. In the end, you won't need to hide any more cables and your view is reduced to just the essentials.

Fan optimized on static pressure

The illuminated P-fans are already mounted on the compact water cooling system works with the following advantages:

• High static pressure for improved cooling performance |2 mm H2O
• Extended speed range | 200 - 1900 rpm (1800 rpm on the radiator)
• Low power consumption | 0.17 A (0.2 A LEDs)
• Less vibration and rubber bumpers | reduced by > 95%
• Improved lifetime | 6 years warranty
• High quality plain bearing 
• PWM for synchronous pump/fan control 
• RGB sharing for synchronous lighting

For more information on the P-fans, please see our FAQ


Thanks to its long hoses, availability in 5 different sizes and different lighting options the Liquid Freezer II Series is versatile. It is highly compatible and can be used effectively, from small form factor PCs (be aware of the radiator thickness!) to big towers.

View the entire Liquid Freezer II
water cooling series

The Liquid Freezer II is the successor to the well-respected Liquid Freezer water cooler from ARCTIC.




Technical specifications & manual

Intel Socket:
1700, 1200, 115X, 2011-3*, 2066* *Square ILM
AMD Socket:
AM5, AM4
Ram Clearance:
6 Years
Operating Ambient Temperature:
0 - 40 °C
Pump/Cold Plate
VRM Fan:
40 mm, 1000 – 3000 RPM (PWM controlled)
800 – 2000 RPM (PWM controlled)
Power Consumption:
0,5 W – 2,7 W (Pump + VRM Fan)
Cold Plate:
Copper, Micro-Skived-Fins
Thermal Paste:
MX-5 (0,8 g)
3x ARCTIC P14 PWM RGB – 140 mm Fan
Fan Speed:
200 – 1 900 RPM
Fan Bearing:
Fluid Dynamic Bearing
Noise Level:
0,3 Sone
0,17 A / 12 V DC
68,9 CFM
Static Pressure:
2 mm H2O
Size & Weight
458 x 138 x 38 mm
Pump (w/o tubes)
98 mm x 78 mm x 53 mm
Tube Diameter:
Outer: 12,4 mm // Inner: 6,0 mm
Tube Length:
450 mm
1977 g (Fan, Radiator, Pump, Tubes)
  • Width: 158 mm
  • Height: 328 mm
  • Length: 447 mm
  • Weight: 2.788 kg

Product gallery


Prices incl. VAT, free shipping
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Accessories and Spare parts

Accessories and Spare parts

PREMIUM Performance Thermal Paste


Prices incl. VAT, free shipping
Liquid Freezer II - AM3(+) Mounting Kit
Available free of charge from our support with the indication of the invoice.


Prices incl. VAT, free shipping
LGA1700 Mounting Kit - Liquid Freezer II Series
For mounting the Liquid Freezer II Series on Intel Alder Lake


Prices incl. VAT, free shipping

Other variants

Other variants

Liquid Freezer II 420 A-RGB
Multi Compatible All-in-One CPU Water Cooler with A-RGB | LGA1700 Kit included


Prices incl. VAT, free shipping
Liquid Freezer II 360 A-RGB
Multi Compatible All-in-One CPU Water Cooler with A-RGB | LGA1700 Kit included


Prices incl. VAT, free shipping
Liquid Freezer II 240 A-RGB
Multi Compatible All-in-One CPU Water Cooler with A-RGB | LGA1700 Kit included


Prices incl. VAT, free shipping


Do you need help or product advice?

Our competent customer service is at your side with questions about our products, spare parts and in case of complaints. Support