ARCTIC Liquid Freezer III Pro 420 A-RGB White CPU Cooler

Name: ARCTIC Liquid Freezer III Pro 548783
Brand: arctic cooling
SKU: 12409981
Price: 128.49 EUR
Availability: InStock

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ARCTIC Liquid Freezer III Pro 420 A-RGB White All-in-One CPU Water Cooler

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Short description

The ARCTIC Liquid Freezer III Pro 420 A-RGB is a high-performance all-in-one CPU liquid cooler featuring a 420mm radiator and three 140mm A-RGB fans. Designed for efficient thermal management, it supports LGA 1700, AM4, and AM5 sockets. With a fan speed range of 400 to 2500 RPM and Fluid Dynamic Bearings, it ensures quiet operation and optimal airflow for demanding PC builds. The white aesthetic provides a clean look for modern gaming systems.

Available for order: 20 pcs.

Warranty: 2 Years

SKU: 12409981

Manufacturer: arctic cooling

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From 4.99 € (Weight: 3.09 kg)

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36 months installment: from 3.57 euros per month

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Product information

Description

The ARCTIC Liquid Freezer III Pro 420 A-RGB is a high-performance all-in-one liquid CPU cooler designed to provide efficient thermal management for modern computer systems. Featuring a large 420mm radiator and three 140mm A-RGB fans, this unit is engineered to handle high thermal loads while maintaining a clean, white aesthetic suitable for contemporary PC builds.

Advantages

This all-in-one cooling solution offers exceptional thermal dissipation capabilities, ensuring that your processor remains within optimal temperature ranges even under heavy workloads. The inclusion of Fluid Dynamic Bearings in the fans promotes long-term reliability and quiet operation. Furthermore, the system is completely maintenance-free, eliminating the need for fluid refills or complex assembly associated with custom water cooling loops.

Suitable for

High-performance gaming PCs
Workstations requiring stable thermal management
Systems using LGA 1700, AM4, or AM5 processor sockets
PC builds with a white color theme

When it may not be suitable

This cooler may not be suitable for small form factor cases that lack the physical space to accommodate a 420mm radiator. Users should verify their computer case dimensions before purchase to ensure compatibility.

Key specifications

Type: All-in-one liquid cooler
Fan diameter: 140 mm
Rotational speed: 400 to 2500 RPM
Airflow: 186 m³/h
Maximum air pressure: 5.2 mmH2O
Bearing type: Fluid Dynamic Bearing
Supported sockets: LGA 1700, AM4, AM5
Dimensions: 458 x 68 x 138 mm

How to use

Installation involves mounting the radiator to the designated fan slots in your PC case and securing the water block onto the processor socket using the provided mounting hardware. Ensure that the pump and fan cables are connected to the appropriate headers on your motherboard to allow for pulse-width modulation control. Once installed, the A-RGB lighting can be synchronized with your motherboard software for customized visual effects.

What to consider before purchase

Check if your PC case supports a 420mm radiator mounting position
Verify that your motherboard socket is compatible with the listed supported types
Ensure there is sufficient clearance for the radiator and fan assembly within the chassis

Usage recommendations: For the best performance, ensure the radiator is mounted in a position that allows for proper airflow and that the pump speed is set to a constant level in your BIOS settings to maintain consistent liquid circulation.

Specifications

Type:: All-in-one liquid cooler
Fan diameter:: 140 mm
Weight:: 2.358 kg
Supported processor sockets:: LGA 1700, Socket AM4, Socket AM5
Product colour:: White

All features

Performance

Type:: All-in-one liquid cooler
Fan diameter:: 140 mm
Supported processor sockets:: LGA 1700, Socket AM4, Socket AM5
Rotational speed (min):: 400 RPM
Rotational speed (max):: 2500 RPM
Maximum airflow:: 110 cfm
Airflow:: 186 m³/h
Maximum air pressure:: 5.2 mmH2O
Bearing type:: Fluid Dynamic Bearing (FDB)
Pulse-width modulation (PWM) support:: Yes
Operating temperature (T-T):: 0 - 40
Suitable location:: Processor
Pump motor speed (max):: 2800 RPM
Pump motor speed (min):: 800 RPM
VRM fan speed (max):: 2500 RPM
VRM fan speed (min):: 400 RPM

Design

Product colour:: White
Illumination colour:: Multi
Number of fans:: 3 fan(s)
Base plate material:: Copper
Fan connector:: 4-pin
Radiator material:: Aluminum
Illumination LED:: Yes

Weight & dimensions

Weight:: 2.358 kg
Package weight:: 2982 g
Height:: 138 mm
Width:: 458 mm
Depth:: 68 mm
Package depth:: 447 mm
Package height:: 158 mm
Package width:: 328 mm
Tube diameter:: 12.4 mm
Radiator width:: 138 mm
Radiator depth:: 458 mm
Radiator height:: 38 mm
Tube length:: 500 mm
Tube inner diameter:: 6 mm

Power

Pump voltage:: 12
Pump current:: 0.35 mA
Fan voltage:: 12 V
Fan current:: 0.35 A
LED voltage:: 5 V

Packaging content

Package type:: Box

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Instructions

mmo_132935123_1764938431_3502_393522.pdf

Description

Instructions

mmo_132935123_1764938431_3502_393522.pdf

Machine translation. Load original

Reasons to buy

Integrated VRM Fan

A dedicated PWM-controlled VRM fan actively lowers voltage regulator temperatures to maintain stable power delivery and system reliability during heavy workloads.

Offset Mounting for Intel and AMD

Precision offset mounting shifts the cold plate toward the CPU hotspot to improve contact with the die and accelerate heat transfer for better cooling efficiency on both Intel and AMD platforms.

Intel Contact Frame

Engineered contact pressure distribution across the cold plate reduces hotspot stress on the CPU, supporting longer processor lifespan while enhancing heat dissipation.

Integrated Cable Management

Sleek, integrated sleeving for fan cables simplifies installation, hides wiring, and keeps your build looking clean with minimal cable clutter.

New P14 Pro Fans — Stronger Performance at Any Speed

The upgraded P14 Pro fans deliver quieter operation and higher static pressure at low RPMs while providing increased performance reserves under load—ensuring powerful, efficient cooling without compromise.

Premium-Class 38 mm Radiator

The 38 mm-thick radiator increases heat dissipation capacity and holds more coolant than standard 27 mm radiators, reducing temperature buildup and improving thermal stability during spikes.

Durable Reinforced Tubing

Reinforced EPDM tubing with braided sheathing enhances durability and resistance to wear, contributing to long-term reliability of the closed-loop system.

Easy Installation

Pre-installed and pre-wired fans, straightforward mounting hardware, and an animated online manual make installation fast and hassle-free for builders of any level.

Includes MX-6 Thermal Paste

Comes with high-quality MX-6 thermal paste; apply in a cross pattern and the pump’s cold plate will spread it evenly for optimal thermal contact.

Two Control Options

Flexible control via supplied splitter cable lets you manage the pump, VRM fan, and radiator fans separately or synchronize them with a single PWM signal for simplified tuning.

Check Case Compatibility

Before installing, ensure your case provides at least 63 mm clearance for the Liquid Freezer III Pro 420 to guarantee proper fit and optimal airflow.

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Customer questions

FAQ

How much does the ARCTIC Liquid Freezer III Pro 420 A-RGB White CPU Cooler cost, and is it available for purchase?

The price is 128.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 20 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 02.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

Can ARCTIC Liquid Freezer III Pro 420 A-RGB White CPU Cooler be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the ARCTIC Liquid Freezer III Pro 420 A-RGB White CPU Cooler online, and the application process is as simple as possible:

Select the product on the website and add it to your cart;
When placing your order, choose the payment method “Installments”;
Fill in the required details for the lending partner;
Receive a decision within a few minutes.

For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All arctic cooling products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized arctic cooling service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: type, fan diameter, weight, supported processor sockets, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

Where can I download the instructions for ARCTIC Liquid Freezer III Pro 420 A-RGB White CPU Cooler?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

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