ARCTIC Liquid Freezer III Pro 420 A-RGB White
420mm AIO CPU Cooler with white P14 Pro A-RGB fans, integrated VRM cooling, offset mounting and a premium 38mm radiator for demanding desktop builds.
Large Aluminium Radiator
140mm A-RGB Fans
Fan Static Pressure
Manufacturer Warranty
High-Performance Cooling in a Clean White Finish
The ARCTIC Liquid Freezer III Pro 420 A-RGB White is a large-format all-in-one CPU liquid cooler designed for enthusiasts, high-performance gaming PCs, content creation systems and demanding desktop workloads. Its white finish and addressable RGB lighting make it a natural choice for coordinated white PC builds.
The cooler combines a 420mm aluminium radiator with three 140mm P14 Pro A-RGB fans, a copper micro-skived cold plate and an integrated VRM fan. Offset mounting helps position the cold plate towards the CPU hotspot, while reinforced EPDM tubing with braided sheathing supports a tidy installation.
420mm Premium Radiator
The 458 × 138 × 38mm aluminium radiator provides a large heat-dissipation surface and additional liquid capacity compared with conventional 27mm-thick radiator designs.
P14 Pro A-RGB Fans
Three 140mm fans operate between 400 and 2500 RPM, with rated airflow up to 110 CFM per fan and static pressure of 5.2 mmH₂O.
Integrated VRM Fan
A dedicated PWM-controlled fan supplies additional airflow around the CPU socket and motherboard voltage-regulation components.
Offset CPU Mounting
The offset mounting design positions the cold plate towards the CPU hotspot area for targeted heat transfer on supported platforms.
Intel Contact Frame
The included Intel contact-frame solution is designed to improve contact-pressure distribution on supported Intel platforms.
Integrated Cable Management
Integrated fan wiring helps reduce visible cable clutter. The fans are pre-installed and pre-wired to simplify assembly.
A-RGB Lighting & Cooling Control
Addressable RGB lighting adds customisable illumination to the white cooler, while PWM control lets you configure the pump, VRM fan and radiator fans for your build.
Addressable Lighting
P14 Pro Fan Range
PWM Pump Control
Flexible Fan Control
Technical Specifications
ACFRE00189A
All-in-One CPU Liquid Cooler
420mm
Aluminium
458 × 138 × 38mm
3× P14 Pro A-RGB, 140mm
400–2500 RPM
110 CFM / 186 m³/h per fan
5.2 mmH₂O
Fluid Dynamic Bearing
800–2800 RPM, PWM
400–2500 RPM, PWM
Copper, Micro-Skived Fins
500mm
12.4mm Outer / 6.0mm Inner
MX-6, 0.8g
AM4, AM5
LGA1700, LGA1851
12× A-RGB Gen2 LEDs on the VRM module; A-RGB fan lighting
3-Pin A-RGB Plug and Socket, 5V
0.35A, 12V DC
0.05A, 12V DC
0–40°C
2358g
White
4895265000362
840033403030
6 Years
Who Is the Liquid Freezer III Pro 420 A-RGB White For?
Platform Technologies & Compatibility
This AIO cooler supports AMD AM4/AM5 and Intel LGA1700/LGA1851 desktop platforms. Confirm your cabinet's 420mm radiator support, motherboard clearance and 5V A-RGB header availability before purchasing.
Before You Build
- Confirm that your cabinet supports a 420mm radiator measuring 458 × 138 × 38mm.
- Allow approximately 68mm of radiator-plus-fan assembly height and check clearance against motherboard heatsinks, RAM and other components.
- Confirm support for the required CPU socket and use the included mounting hardware for your platform.
- For lighting, use a compatible 3-pin 5V A-RGB header. Do not connect a 5V A-RGB plug to a 4-pin 12V RGB header.
- Check the routing space for the 500mm tubes and plan radiator placement before assembling the system.
Common Buying Questions
Is the ARCTIC Liquid Freezer III Pro 420 A-RGB White compatible with AM5?
Yes. It supports AMD AM5 and AM4 desktop CPU sockets.
Does ACFRE00189A support Intel LGA1851?
Yes. The cooler supports Intel LGA1851 and LGA1700 platforms.
How many fans are included?
Three 140mm ARCTIC P14 Pro A-RGB radiator fans are included.
Does this cooler include a VRM fan?
Yes. An integrated PWM-controlled VRM fan operates from 400–2500 RPM to provide additional airflow around the CPU socket area.
What is the radiator thickness?
The aluminium radiator is 38mm thick. Allow approximately 68mm for the radiator and fan assembly when checking cabinet clearance.
Does it include thermal paste?
Yes. ARCTIC includes 0.8g of MX-6 thermal compound.
Can I connect the A-RGB lighting to any RGB header?
No. Use a compatible 3-pin 5V A-RGB connection. A 4-pin 12V RGB header is not compatible.
What warranty does it carry?
ARCTIC specifies a 6-year manufacturer warranty for the Liquid Freezer III Pro 420 A-RGB White.
Building a High-Performance White PC?
Pair your ARCTIC 420mm AIO with a compatible cabinet, powerful graphics card and the right components. Explore Clarion Computers' cooling options or get in touch for help planning your build.