# Watercool Heatkiller V — GPU water block for AMD RX 6800/6900XT, ARGB, acetal black

**URL:** https://aio.lv/en/product--watercool-15657--4598156
**Data updated:** 2026-03-07 14:51 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** Watercool
**Manufacturer code:** 15657
**EAN:** 4251312605339
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 176.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 146.27 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--watercool-15657--4598156

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

Watercool Heatkiller V is a GPU water block designed for AMD Radeon RX 6800 and RX 6900 XT graphics cards. It features an acetal black top, ARGB lighting for customizable illumination, and full-coverage cooling contact for GPU, memory and VRM areas. Intended for custom liquid cooling loops to reduce temperatures and noise in high-performance PC builds.

## Long description

The Watercool Heatkiller V is a full-coverage GPU water block engineered for AMD Radeon RX 6800 and RX 6900 XT graphics cards. With an acetal black top and integrated ARGB lighting, this water block provides direct liquid cooling to the GPU core, memory modules and VRM area to lower operating temperatures and reduce fan noise in custom liquid-cooled systems. It is intended for users building high-performance PCs who require efficient heat transfer and a visually integrated appearance.
Advantages
The acetal black top offers a durable, low-profile aesthetic while the full-coverage design ensures contact with all critical heat-generating components. Optimized coolant channels and a high-contact base plate improve thermal conductivity and enable stable performance under sustained loads. The integrated ARGB lighting supports synchronized illumination with compatible controllers for coordinated system lighting. The block is compatible with standard liquid cooling fittings and mounting solutions for supported AMD reference PCB layouts.
Suitable for
 Custom liquid cooling loops in desktop gaming PCs
 Workstations requiring lower GPU temperatures for prolonged workloads
 Silent PC builds where fan speeds are reduced by liquid cooling
 System builds that include ARGB lighting coordination
Key specifications
 Compatibility: AMD Radeon RX 6800 and RX 6900 XT reference PCB layouts
 Top material: Acetal (black)
 Lighting: Integrated ARGB illumination
 Coverage: Full-coverage design for GPU core, memory and VRM areas
 Cooling type: Liquid cooling, designed for custom loops
 Mounting: Multi-point mounting for stable contact with PCB components
How to use
Install the water block following the manufacturer’s instructions for removing the original cooler and preparing the GPU. Clean the GPU die and memory contacts, apply appropriate thermal interface material to the GPU core and thermal pads to memory and VRM areas as specified, then secure the block to the PCB with the supplied mounting hardware. Connect coolant tubing to the ports using compatible fittings and integrate the block into a closed-loop cooling system. Connect the ARGB header to a compatible controller or motherboard header to enable lighting control.
Usage recommendations
Verify that your specific GPU PCB matches the supported layouts before installation. Use recommended thermal paste and pads of correct thickness to ensure optimal contact. Flush and refill the loop with compatible coolant, check for leaks after initial assembly, and monitor temperatures and lighting settings after first power-up.

## Specifications

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 1.34 kg |

## FAQ

### How much does the Watercool Heatkiller V — GPU water block RX 6800/6900XT cost, and is it available for purchase?

The price is 176.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 16.07.2026 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 Watercool Heatkiller V — GPU water block RX 6800/6900XT 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 Watercool 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 Watercool 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: weight, 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/4598156/68521427_large.webp