Watercool unveils Heatkiller V water block for GeForce RTX 3090 and RTX 3080 GPUs

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“The focus of our development has always been to improve the deliverable performance.” (Rico Weber, WATERCOOL CEO, Sep.2020)
This quote marked the beginning of the development of our new HEATKILLER® V VGA cooler. In addition to an increase in performance, the focus also lay on improvements in handling and durability. We also wanted to give the cooler a little visual makeover.
  • Dual-layer flow
  • Refined cooling structure
  • Increased flow
  • Symmetrical cooling design
  • Screwless cover
  • RGB as standard
  • Insulating spacers made of high-performance plastic (Peek)
  • Stainless steel reinforced threads
  • CNC cut thermal pads
  • Kryonaut thermal compound


The inflow to the cooling structure has been completely reworked. It now is placed with a vertical offset on a second level. The inlet and outlet channels cross each other, but are spatially separated from each other. The new design allows a symmetrical arrangement of the cooling channels. The advantage of the symmetrical design is a steady flow through the heat sink. Dead zones and hotspots are thus effectively avoided. At the same time the windage is reduced.
With the new HEATKILLER V the extremely efficient cooling structure of the predecessor was further refined. The enlarged cooling surface ensures exceptionally low GPU temperatures. To reduce turbulences, all cooling channels were manufactured in a rounded design.


With the new design of the HK V, there are no more screws in the visible area, which gives the cooler a very clean and unique look. The two acrylic nickel versions also feature integrated aRGB illumination. Here we are using an LED strip with an immensely high density of 144LEDs per linear meter. This unusually high number was intended to provide adequate illumination.

Insulating spacers and stainless steel reinforced threads

Our experience gained in the industrial sector brought the high-performance synthetic material “Peek” to attention. This material provides one hundred percent insulation between the cooler block and the graphics card’s circuit board. To avoid issues with the threads in the Plexiglas, we inserted a square nut made of stainless steel.


With the Pre-cut thermal the installation has never been easier before. The award-winning Thermal Grizzly Kryonaut thermal paste ensures the heat transfer from the GPU to the cooler. Even the maintenance has been thought of. By loosening two screws, the stainless steel respectively aluminum bezel can be removed.

Announced options:

  • Backplate
  • Vertical connection terminal (Plexiglas®GS, Acetal
There will be optional modifications for the HEATKILLER® V VGA. Besides the obligatory backplate, we also thought about modding with a vertical connection terminal made of Plexiglas® GS.

The HEATKILLER® V VGA is available in different versions for well-known manufacturers. Besides EVGA, ZOTAC, Palit, Gainward, KFA2 many other brands produce graphics cards based on the “manufacturer reference PCB”. The coolers are designed to fit perfectly on all PCBs.

You can choose from a number of different variants. There are Acetal copper versions as well as Plexiglas GS® versions with a nickel-plated copper bottom and bright aRGB stripes. The prices vary and start from 129,90 € without optional accessories.

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