# Radiator block Alphacool NexXxoS ST25

**URL:** https://aio.lv/en/product--alphacool-14353--3932645
**Data updated:** 2025-12-29 13:53 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** Alphacool
**Manufacturer code:** 14353
**EAN:** 4250197142502
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 79.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 66.11 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--alphacool-14353--3932645

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The Alphacool NexXxoS ST25 Radiator block features a compact design with dimensions of 120mm width, 272mm depth, and 25.5mm height. Made from high-quality copper and steel, it ensures efficient liquid cooling. The black finish adds a sleek look to your setup. Ideal for custom cooling systems, it provides excellent heat dissipation and performance.

## Long description

The Alphacool NexXxoS ST25 Radiator block is a slim liquid-cooling radiator designed for compact PC builds and small form factor systems. With a flat profile and copper construction for end chambers, water channels and cooling fins, it provides efficient heat transfer and suits custom water-cooling loops where space is limited. The radiator measures approximately 120 mm × 272 mm × 25.5 mm and comes in a black finish.
Advantages
All major thermal components of the NexXxoS ST25—end tanks, water channels and fins—are made from pure copper, offering higher thermal conductivity than aluminium and improving heat dissipation. The radiator uses a 15 FPI fin spacing combined with small serrations on each fin to guide airflow, increase surface area and maintain cooling capacity with low airflow resistance. Its slim 25.5 mm profile makes it well suited to Mini-PC and small-form-factor installations where internal space is restricted.
Suitable for
Mini-ITX and other small form factor PC cases
Custom water-cooling loops in compact builds
Situations requiring a low-profile radiator with good cooling performance
Key specifications
Product type: Radiator block
Model: Alphacool NexXxoS ST25
Dimensions (approx.): 120 mm × 272 mm × 25.5 mm
Material: Copper (end chambers, water channels, fins), steel components
Colour: Black
Fin density: 15 FPI
MPN: 14353
EAN: 4250197142502
How to use
Install the NexXxoS ST25 into your PC case where a 120 mm fan/radiator mounting location is available, ensuring sufficient airflow through the fins. Connect the radiator to your custom water-cooling loop using appropriate fittings and tubing compatible with the radiator ports. Secure the radiator with case screws or mounting brackets, mount fans if required for active airflow, and fill and bleed the loop according to your cooling system’s instructions before powering the system.
Usage recommendations
Use corrosion-inhibiting coolant compatible with copper and follow standard loop-filling and leak-test procedures. For optimal performance in compact builds, pair the ST25 with low-profile or high-static-pressure 120 mm fans and ensure adequate case ventilation.

## Specifications

| Feature | Value |
|---|---|
| Number of connectors | 2 |
| Connecting thread | 1/4 |

### Performance

| Feature | Value |
|---|---|
| Type | Radiator block |

### Design

| Feature | Value |
|---|---|
| Product colour | Black |
| Material | Cooper, Steel |
| Certification | CE, FC, RoHS |

### Weight & dimensions

| Feature | Value |
|---|---|
| Package weight | 676 g |
| Height | 25.5 mm |
| Width | 120 mm |
| Depth | 272 mm |
| Package depth | 340 mm |
| Package height | 40 mm |
| Package width | 140 mm |

### Other features

| Feature | Value |
|---|---|
| Cooling agent | liquid |

## FAQ

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

The price is 79.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 96 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 23.07.2026 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. 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, 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.

## Image

https://aio.lv/img/cache/product/3932645/65740822_large.webp