Watercool HEATKILLER V ULTRA for RTX 5090 ASUS TUF ACRYL Ni aRGB GPU Water Block, G1/4, Nickel Plated Copper (15688)

A full-cover water block for the ASUS TUF Gaming GeForce RTX 5090 and its OC Edition. The Watercool HEATKILLER V ULTRA for RTX 5090 ASUS TUF ACRYL Ni aRGB pairs a nickel-plated electrolytic copper base (100 x 0.15 mm fins) with an acrylic cover and natural anodized aluminum trim. The aRGB lighting comes pre-assembled. It cools the GPU, the memory and the voltage converter, and the backplate is in the box.

Properties

• Cards: ASUS TUF Gaming GeForce RTX 5090 and OC Edition
• Base: Nickel-plated electrolytic copper, 100 x 0.15 mm fins
• Cover: PLEXIGLAS GS with natural anodized aluminum
• Ports: 4x G1/4 (DIN ISO 228-1)
• Lighting: aRGB board, plug-in
• Size: 259.5 x 130 x 27.5 mm with backplate

Made for one card

According to Watercool, the new HEATKILLER V graphics card coolers for the ASUS RTX 5090 TUF graphics cards represent a consistent further development of its already successful RTX 4090 coolers, optimized for maximum performance. The entire unit was designed specifically around the ASUS RTX 5090 TUF board to achieve maximum performance. These are the key features of the HK V ULTRA series:

• Modular ULTRA-Performance base plate with 100 x 0.15 mm fins
• Dual layer inflow as well as a symmetrical cooling design
• Design-integrated connection threads in a connection module that is screwed to the copper base plate
• A screwless front thanks to a magnetic holding system
• An aRGB board with an improved connector system

Modular ultra-performance base plate

Watercool says its current Ultra-Performance base plate, with 100 fins of 0.15 mm, sets the standard for water-cooled graphics card coolers. In its words, the plate is currently considered the benchmark in the water cooling field. The ULTRA version has a larger cooling surface than the PRO version, ensuring better temperatures.

All gaps to heat-sensitive components have been minimized, giving optimal heat dissipation from thermally sensitive areas such as the RAM and the voltage converter. Precisely fitting spacers ensure perfect stability and an optimal force distribution between the cooler, the graphics card and the backplate.

Dual layer inflow and symmetrical cooling design

Both are found in the current version of the HEATKILLER V GPU cooler. The increased inflow is particularly important for the ultra-performance base plate. Dividing the water into two levels gives a better flow through the cooler. The symmetrical flow paths, which were implemented through extensive flow simulations, optimize the flow and thus the overall performance of the block.

Screwless front, easy maintenance

A newly developed magnetic mounting system enables a screwless front design. It also gives quick access for maintenance or for the installation of an aRGB board.

Compatibility

Watercool lists two boards for this block. With the Pro-Performance base plate instead, the same card takes the HEATKILLER V PRO in nickel.

• ASUS TUF Gaming GeForce RTX 5090
• ASUS TUF Gaming GeForce RTX 5090 OC Edition

Notes

• Take off the pre-mounted backplate first; its red plastic washers are only transport protection and must be removed.
• Watercool recommends demineralized or deionized (distilled) water with a suitable corrosion inhibitor as coolant.
• Removing the original air cooler may affect or void the graphics card warranty.

In the box

• 1 x HEATKILLER® V ULTRA aRGB
• 1 x HEATKILLER® V ULTRA backplate
• 1 x mounting material