# Radiator block Alphacool NexXxoS ST25

**URL:** https://aio.lv/en/product--alphacool-14354--3607240
**Data updated:** 2025-12-29 13:35 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** Alphacool
**Manufacturer code:** 14354
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 100.99 €
**Prices and availability valid until:** 2026-07-06 23:59
**Price without VAT (21%):** 83.46 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--alphacool-14354--3607240

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary 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.

## Long 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

| Feature | Value |
|---|---|
| Maximum operating temperature | 60 °C |
| 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 |
|---|---|
| Weight | 0.97 kg |
| Height | 40 mm |
| Width | 140 mm |
| Depth | 458 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 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 08.07.2026 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, 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.

## Image

https://aio.lv/img/cache/product/3607240/65740491_large.webp