# Watercool full-cover GPU water block Heatkiller V Ultra for NVIDIA RTX 4090 Founders Edition — acrylic top, nickel-plated base, ARGB

**URL:** https://aio.lv/en/product--watercool-15677--11866919
**Data updated:** 2026-03-09 17:44 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** Watercool
**Manufacturer code:** 15677
**EAN:** 4251312606527
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 357.99 €
**Prices and availability valid until:** 2026-08-01 23:59
**Price without VAT (21%):** 295.86 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--watercool-15677--11866919

## 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

A full-cover GPU water block by Watercool designed for NVIDIA RTX 4090 Founders Edition cards. The Heatkiller V Ultra features an acrylic (Acryl) top, nickel-plated (Ni-Bl) coldplate and integrated ARGB illumination. Intended for custom liquid-cooling loops, it provides direct die cooling, VRAM and power-phase coverage, and fits FE PCB layouts for improved thermal management in high-performance gaming and workstation systems.

## Long description

The Watercool Heatkiller V Ultra full-cover GPU water block is engineered for NVIDIA RTX 4090 Founders Edition graphics cards. With an acrylic top and nickel-plated coldplate, this water block provides direct cooling to the GPU die while covering VRAM modules and voltage regulator/power-phase components. Integrated ARGB illumination offers visual customization within custom liquid-cooling loops. The design matches the Founders Edition PCB layout to ensure fitment and efficient thermal transfer for high-performance gaming and workstation builds.
Advantages
This full-cover block delivers direct die contact and broad component coverage to reduce GPU temperatures and thermal throttling under sustained loads. The nickel-plated base combines corrosion resistance with good thermal conductivity, while the clear acrylic top allows visibility of coolant flow and ARGB lighting. Engineered for the specific PCB layout, it simplifies installation on compatible Founders Edition cards and integrates into looped liquid-cooling systems for quieter, more consistent thermal management.
Suitable for
High-performance gaming systems using NVIDIA RTX 4090 Founders Edition cards
Workstation rigs performing GPU-intensive rendering or compute tasks
Custom liquid-cooling loops where full component coverage and ARGB aesthetics are desired
Overclocked GPUs requiring improved cooling for sustained stability
Key specifications
Compatibility: NVIDIA RTX 4090 Founders Edition PCB layout
Top material: Acrylic (clear)
Base material: Copper with nickel plating
Cooling type: Full-cover water block providing direct die, VRAM and power-phase cooling
Lighting: Integrated ARGB illumination
Mounting: Designed for Founders Edition mounting points and connectors
Intended use: Custom liquid-cooling loops
How to use
Install the Heatkiller V Ultra by first preparing the graphics card—remove the factory cooler and clean contact surfaces. Apply thermal interface material to the GPU die and appropriate thermal pads to VRAM and power components according to manufacturer thickness recommendations. Align the block with the Founders Edition PCB mounting points and secure using the supplied hardware, ensuring even pressure across the coldplate. Connect inlet and outlet ports to your loop, bleed air from the system, and verify flow and leak-free operation before powering the computer.
Usage recommendations
Use corrosion-inhibiting, compatible coolant and follow recommended thermal-pad thicknesses for optimal contact. Periodically inspect fittings and coolant condition, and verify ARGB connections to your controller or motherboard header for correct lighting operation.

## FAQ

### How much does the Watercool Heatkiller V Ultra GPU water block for RTX 4090 cost, and is it available for purchase?

The price is 357.99 € (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 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, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Watercool Heatkiller V Ultra GPU water block for RTX 4090 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

## Image

https://aio.lv/img/cache/product/11866919/67271744_large.webp