ARCTIC Liquid Freezer III Pro 420 CPU Water Cooler

Name: ARCTIC Liquid Freezer III Pro 548779
Brand: arctic cooling
SKU: 12409979
Price: 115.99 EUR
Availability: InStock

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ARCTIC Liquid Freezer III Pro 420 All-in-One CPU Water Cooler, 120mm Fans, Black

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Short description

The ARCTIC Liquid Freezer III Pro 420 is a high-performance all-in-one liquid cooling kit designed for efficient CPU thermal management. It features 120 mm fans with Fluid Dynamic Bearings for quiet operation and high airflow of 186 m³/h. Compatible with Intel LGA 1700 and AMD AM4/AM5 sockets, this black cooling solution ensures optimal system stability and performance for demanding computing tasks.

Available for order: 80 pcs.

Warranty: 2 Years

SKU: 12409979

Manufacturer: arctic cooling

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2b. Kengaraga str., Riga, Latvia, LV-1063

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From 4.99 € (Weight: 2.99 kg)

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36 months installment: from 3.22 euros per month

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Product information

Description

The ARCTIC Liquid Freezer III Pro 420 is a high-performance all-in-one liquid cooling solution designed to provide efficient thermal management for modern processors. This maintenance-free system combines a large radiator with high-quality fans to ensure stable temperatures even under heavy workloads, making it a reliable choice for users seeking effective heat dissipation without the complexity of custom water cooling loops.

Advantages

This liquid cooling kit offers exceptional thermal performance, allowing processors to maintain optimal operating temperatures during intensive tasks. The inclusion of fans with Fluid Dynamic Bearings ensures a balance between high airflow and quiet operation, contributing to a more comfortable computing environment. Its all-in-one design simplifies the installation process, providing a robust cooling solution that is ready to use straight out of the box without the need for additional maintenance.

Suitable for

High-performance gaming PCs
Workstations used for video editing and rendering
Systems requiring stable cooling for overclocked processors
Users looking for a reliable and maintenance-free liquid cooling upgrade

When it may not be suitable

This cooler features a large 420 mm radiator, which may not fit in smaller PC cases or compact form factor builds. Please ensure your computer chassis has sufficient space to accommodate the radiator and fan assembly before attempting installation.

Key specifications

Type: Liquid cooling kit
Fan diameter: 120 mm
Airflow: 186 m³/h
Bearing type: Fluid Dynamic Bearing
Supported sockets: Intel LGA 1700, AMD AM4, AMD AM5
Colour: Black

How to use

To install the ARCTIC Liquid Freezer III Pro 420, first ensure your motherboard is compatible with the supported socket types. Secure the radiator to the appropriate mounting points within your PC case, ensuring there is adequate clearance for airflow. Attach the water block to the CPU using the provided mounting hardware, ensuring even pressure and proper thermal paste application. Connect the fan and pump cables to the designated headers on your motherboard to enable pulse-width modulation control for automated speed adjustments.

What to consider before purchase

Verify that your PC case supports a 420 mm radiator size
Check motherboard clearance for the water block and tubing
Ensure your power supply unit has sufficient capacity for the cooling system

Usage recommendations: For the best thermal results, ensure the radiator is mounted in a position that allows for unobstructed airflow and regularly clean the fan blades and radiator fins to prevent dust accumulation.

Specifications

Type:: Liquid cooling kit
Fan diameter:: 120 mm
Weight:: 2.37 kg
Supported processor sockets:: LGA 1700, Socket AM4, Socket AM5
Product colour:: Black

All features

Performance

Type:: Liquid cooling kit
Fan diameter:: 120 mm
Supported processor sockets:: LGA 1700, Socket AM4, Socket AM5
Maximum airflow:: 110 cfm
Airflow:: 186 m³/h
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
Fan speed (max):: 2500 RPM
Fan speed (min):: 400 RPM
Quantity per pack:: 1 pc(s)
Fan static pressure:: 5.2 mmH2O
VRM fan speed (max):: 2500 RPM
VRM fan speed (min):: 400 RPM

Design

Product colour:: Black
Number of fans:: 3 fan(s)
Base plate material:: Copper
Fan connector:: 4-pin
Radiator material:: Aluminum

Weight & dimensions

Weight:: 2.37 kg
Package weight:: 2994 g
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:: 450 mm
Fan dimensions (W x D x H):: 120 x 120 x 25
Tube inner diameter:: 6 mm
Pump width:: 91 mm
Pump depth:: 108.5 mm
Pump height:: 68.5 mm
VRM fan diameter:: 91 mm

Power

Pump voltage:: 12
Pump current:: 350 mA
Fan voltage:: 12 V
Fan current:: 0.35 A

Packaging content

Package type:: Box

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Instructions

mmo_132799180_1752164183_0765_79917.pdf

Description

Instructions

mmo_132799180_1752164183_0765_79917.pdf

Machine translation. Load original

Reasons to buy

Integrated VRM Fan

Built-in PWM-controlled VRM fan actively lowers voltage regulator temperatures to maintain stable power delivery and consistent CPU performance under load.

Offset Mounting for Intel and AMD

Offset cold plate aligns with the CPU hotspot to improve heat transfer efficiency for both Intel and AMD sockets, helping the cooler remove heat where the processor needs it most.

Intel Contact Frame

Engineered contact frame distributes mounting pressure evenly across Intel processors, reducing strain on the CPU and enhancing long-term heat dissipation and reliability.

Integrated Cable Management

Neatly sleeved and routed fan cables simplify installation and minimize clutter inside your case for a cleaner build and improved airflow.

New P12 Pro Fans — Stronger Cooling at Any Speed

The P12 Pro fans deliver quiet operation and high static pressure for exceptional radiator performance. Their broad speed range gives efficient silent cooling at low RPMs and strong airflow when needed. Key specs: Speed 400–2500 rpm; Bearing: Fluid Dynamic Bearing; Static Pressure: 5.2 mmH2O; Airflow: 110 cfm | 186 m³/h.

Premium-Class 38 mm Radiator

The thicker 38 mm radiator improves heat dissipation and holds more coolant than standard 27 mm designs, reducing temperature spikes and maintaining stable cooling under sustained load.

Durable Reinforced Tubing

Reinforced EPDM tubing with braided sheathing increases durability and resistance to wear while preserving flexible routing options inside your system.

Easy Installation

Pre-installed and pre-wired fans, straightforward mounting hardware, and an animated online manual make setup fast and user-friendly for builders of all experience levels.

Includes MX-6 Thermal Paste

Comes with high-performance 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

Use the splitter cable to control the pump, VRM fan, and radiator fans either separately or synchronized via a single PWM signal for flexible system tuning.

Check Case Compatibility

Before installing, ensure your case provides at least 63 mm of clearance required for proper mounting and compatibility with this Liquid Freezer model.

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Customer questions

FAQ

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

The price is 115.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 80 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 01.07.2026 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 CPU Water 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 CPU Water 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 CPU Water 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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