Radiator block Alphacool NexXxoS ST25

100.99 €

AiO.lv Computer Components Desktops accessories CPU Coolers & PC Cooling Systems Alphacool

Radiator block Alphacool NexXxoS ST25

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Offer for legal entity, cashless payment. Why is an item available only for a legal entity?
This is due to long delivery times and limited product warranties.

Short description

The Alphacool NexXxoS ST25 Radiator block features a compact design with dimensions of 140 mm width, 458 mm depth, and 40 mm height. Made from high-quality copper and steel, it ensures efficient liquid cooling. Its sleek black finish adds a modern touch to your setup, while the liquid cooling agent enhances thermal performance, making it ideal for high-performance systems.

Available for order: 105 pcs.

Warranty: 2 Years

SKU: 3607240

Manufacturer: Alphacool

delivery

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to the Customer Service Center at Kengaraga 2b, Riga

07.07.2026 {{selectedOffer.officeDeliveryString}}

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Customer service center

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

07.07.2026 {{selectedOffer.officeDeliveryString}}

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Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!

10.07.2026 {{selectedOffer.courierDeliveryString}}

From 4.99 € (Weight: 0.97 kg)

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Latvijas Pasts pakomāts / Unisend / DPD Paku skapis / Omniva / Venipak Pickup / Venipak Locker / Latvijas Pasts nodaļa

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From 1.99 €

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Product information

Description

The Alphacool NexXxoS ST25 radiator block is a slim, compact liquid-cooling radiator designed for small form factor and Mini-PC systems. Constructed with copper end chambers, water channels and cooling fins, and finished in black, the ST25 provides a high thermal-conductivity solution in a low-profile 140 x 458 x 40 mm housing and weighs approximately 0.97 kg.

Advantages

All-welded copper construction increases heat transfer compared with aluminium designs thanks to copper's higher thermal conductivity. A fin spacing of 15 FPI combined with small serrations on each fin improves airflow guidance and surface area for efficient heat dissipation while keeping airflow resistance and noise low. The slim 40 mm profile makes this radiator suitable for tight enclosures where space is limited.

Suitable for

Mini-PC builds and Small Form Factor (SFF) systems
Compact custom liquid-cooling loops
Systems where low profile radiators are required to fit limited case space

Key specifications

Type: Radiator block
Brand: Alphacool, model NexXxoS ST25 (MPN 14354)
Material: Copper (end chambers, water channels, cooling fins); steel components as applicable
Dimensions (W x D x H): 140 x 458 x 40 mm
Weight: 0.97 kg
Colour: Black
Fin density: 15 FPI

How to use

Install the radiator in your case where clearance allows for the 40 mm thickness and secure it using the case or radiator mounting points. Connect inlet and outlet ports to your loop using compatible fittings and tubing, ensure correct flow direction, and fill the loop with a suitable coolant. Bleed any trapped air from the loop before powering your system. Monitor temperatures and leak-test the installation following standard liquid-cooling procedures.

Usage recommendations

Use corrosion-inhibiting and manufacturer-recommended coolants with copper components. Ensure fittings and tubing are compatible with the radiator ports and avoid high airflow restriction fans if you need to minimize noise while maintaining adequate cooling performance.

Specifications

Type:: Radiator block
Weight:: 0.97 kg
Product colour:: Black

All features

Maximum operating temperature:: 60 °C
Number of connectors:: 2
Connecting thread:: 1/4

Performance

Type:: Radiator block

Design

Product colour:: Black
Material:: Cooper, Steel
Certification:: CE, FC, RoHS

Weight & dimensions

Weight:: 0.97 kg
Height:: 40 mm
Width:: 140 mm
Depth:: 458 mm

Other features

Cooling agent:: liquid

Instructions

mmo_86501193_1620396584_4556_15785.pdf

Description

Instructions

mmo_86501193_1620396584_4556_15785.pdf

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Customer reviews

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Customer questions

FAQ

How much does the Radiator block Alphacool NexXxoS ST25 cost, and is it available for purchase?

The price is 100.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 105 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 07.07.2026 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. All transactions are 100% secure and encrypted.

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 Alphacool 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 Alphacool 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, weight, 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 Radiator block Alphacool NexXxoS ST25?

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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14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.

Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.

Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.

Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.