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

**URL:** https://aio.lv/en/product--arctic-cooling-548781--12409978
**Data updated:** 2026-05-09 16:16 (EEST)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** arctic cooling
**Manufacturer code:** 548781
**EAN:** 0840033403023
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 115.99 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 95.86 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--arctic-cooling-548781--12409978

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary 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.

## Long 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

### Performance

| Feature | Value |
|---|---|
| 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

| Feature | Value |
|---|---|
| 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

| Feature | Value |
|---|---|
| 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

| Feature | Value |
|---|---|
| Pump voltage | 12 |
| Pump current | 0.35 mA |
| Fan voltage | 12 V |
| Fan current | 0.35 A |
| LED voltage | 5 V |

## 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 115.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 56 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. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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. More information about warranty service: https://aio.lv/en/warranty

### 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.

## Image

https://aio.lv/img/cache/product/12409978/68708297_large.webp