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header-product ARCTIC Liquid Freezer III Pro 420 A-RGB All-in-One CPU Water Cooler
116.49 €

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

ARCTIC Liquid Freezer III Pro 420 A-RGB CPU Water Cooler Photo 1
ARCTIC Liquid Freezer III Pro 420 A-RGB CPU Water Cooler Photo 2
ARCTIC Liquid Freezer III Pro 420 A-RGB CPU Water Cooler Photo 3
ARCTIC Liquid Freezer III Pro 420 A-RGB CPU Water Cooler Photo 4
ARCTIC Liquid Freezer III Pro 420 A-RGB CPU Water Cooler Photo 5
ARCTIC Liquid Freezer III Pro 420 A-RGB CPU Water Cooler Photo 1
ARCTIC Liquid Freezer III Pro 420 A-RGB CPU Water Cooler Photo 2
ARCTIC Liquid Freezer III Pro 420 A-RGB CPU Water Cooler Photo 3
ARCTIC Liquid Freezer III Pro 420 A-RGB CPU Water Cooler Photo 4
ARCTIC Liquid Freezer III Pro 420 A-RGB CPU Water Cooler Photo 5
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Short description

The ARCTIC Liquid Freezer III Pro 420 A-RGB is a high-performance all-in-one CPU water cooler featuring three 140mm fans with fluid dynamic bearings. It supports LGA 1700, AM4, and AM5 sockets, offering a rotational speed range of 400 to 2500 RPM and an airflow of 186 m³/h. Designed for efficient thermal management, this black A-RGB cooler ensures optimal cooling for demanding processors in high-end PC builds.
Available for order: 58 pcs.
Warranty: 2 Years
SKU: 12409978
Manufacturer: arctic cooling
free shipment

Cheapest delivery:

Venipak Pickup LV, Venipak Locker LV

Pick-up points

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Cost

1.89 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
15.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
20.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 3.11 kg)
Parcel couriers
Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
20.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment
36 months installment: from 3.24 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 CPU water cooler designed to provide efficient thermal management for demanding processors. This system features a large radiator paired with three 140mm fans, utilizing fluid dynamic bearings to ensure quiet and reliable operation. With its integrated A-RGB lighting and sleek black finish, it combines aesthetic appeal with robust cooling capabilities for high-end PC builds.

Advantages

This all-in-one liquid cooler offers exceptional thermal dissipation, allowing processors to maintain stable temperatures even under heavy workloads. The maintenance-free design eliminates the need for complex custom loop setups, making it accessible for both enthusiasts and professionals. The inclusion of fluid dynamic bearings significantly reduces friction, which enhances the lifespan of the fans and ensures consistent performance over time. Furthermore, the wide rotational speed range allows for precise control over cooling intensity based on current system demands.

Suitable for

  • High-performance gaming PCs
  • Workstations for video editing and rendering
  • Systems requiring quiet operation under load
  • PC builds using LGA 1700, Socket AM4, or Socket AM5 processors

When it may not be suitable

This cooler features a large 420mm radiator, which may not fit in smaller PC cases or compact form factor chassis. Users should verify that their case supports 420mm radiator mounting before purchase to avoid compatibility issues.

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 (FDB)
  • Supported sockets: LGA 1700, Socket AM4, Socket AM5
  • Dimensions: 458 mm x 68 mm 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 CPU socket using the provided mounting hardware. Ensure that the thermal paste is applied correctly between the processor and the water block surface. Connect the fan and pump cables to the appropriate headers on your motherboard to enable PWM control and A-RGB lighting synchronization.

What to consider before purchase

  • Check the internal dimensions of your PC case to ensure it accommodates a 420mm radiator.
  • Verify that your motherboard socket is compatible with the supported types.
  • Ensure your power supply unit has sufficient capacity to handle the cooling system and other components.

Usage recommendations

Regularly clean the radiator fins from dust accumulation to maintain optimal airflow and cooling efficiency. Ensure that the pump speed is set correctly in the BIOS to prevent overheating during intensive tasks.

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:
Black
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:
Black
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

Description

Machine translation. Load original

Reasons to buy

Integrated VRM Fan

A PWM-controlled VRM fan actively lowers voltage regulator temperatures to maintain stable power delivery and protect sensitive components during heavy loads.

Integrated VRM Fan - Active VRM cooling

Offset Mounting for Intel and AMD

Offset cold plate placement targets the CPU hotspot for more direct heat transfer, improving cooling efficiency on both Intel and AMD platforms.

Offset Mounting for Intel and AMD - Targeted cold plate

Intel Contact Frame

Engineered contact pressure distribution ensures even mounting on Intel sockets, promoting consistent heat dissipation and helping extend CPU lifespan.

Intel Contact Frame - Optimized contact pressure

Integrated Cable Management

Neatly integrated fan cables inside the sleeving simplify installation and reduce clutter for a cleaner, more professional system build.

Integrated Cable Management - Tidy cabling

The New P14 Pro Fans — Stronger Performance at Any Speed

P14 Pro fans deliver quieter operation at low RPMs and higher cooling reserves under load, providing powerful, low-noise airflow across the full speed range for maximum thermal control.

The New P14 Pro Fans More Performance at Any Speed - High-performance fans

Premium-Class Radiator

The 38 mm radiator increases coolant volume and surface area compared with standard 27 mm radiators, reducing heat buildup and improving handling of temperature spikes for sustained cooling performance.

Premium-Class Radiator - Larger 38 mm radiator

Premium Tubing

Durable, reinforced EPDM tubing with braided sheathing resists wear and kinks, ensuring long-term reliability and leak-resistant routing.

Premium Tubing - Reinforced EPDM tubing

Easy Installation

Pre-installed, pre-wired fans and straightforward mounting hardware speed up assembly—an animated online manual guides you step by step for a hassle-free setup.

Easy Installation - Pre-wired and guided setup

Includes MX-6 Thermal Paste

The cooler ships with MX-6 thermal paste; apply it in a cross pattern and the pump’s cold plate spreads it evenly for optimal thermal contact.

Includes MX-6 Thermal Paste - Pre-included thermal compound

Two Control Options

Use the included splitter cable to control the pump, VRM fan, and radiator fans independently, or synchronize them via a single PWM signal for simplified system control.

Two Control Options - Independent or synchronized control

Check Your Case for Compatibility

Before purchasing, ensure your case provides at least 63 mm of clearance required for proper installation of the Liquid Freezer to avoid fitment issues.

Check Your Case for Compatibility - Required 63 mm clearance

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Customer reviews

Customer questions

FAQ

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

The price is 116.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 58 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 15.07.2026 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 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 A-RGB 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 A-RGB 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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