HEATKILLER IV Pro Threadripper Water Block Review

WaterCool.de does not mess around when it comes to water cooling enthusiasts computers for well over a decade now. Many of us have been waiting with bated breath for Watercool's entry into the Threadripper cooling market, and it finally is with the HEATKILLER IV Pro. We compare it to five other water blocks.

Watercool HEATKILLER IV PRO for Threadripper

Watercool has a very big following in both Europe and the United States. It builds and designs all its enthusiast water cooling products in Germany. Watercool's design and execution are apparent the moment you hold its product in your hand. Watercool manufactures water blocks for CPUs and GPUs as well as motherboard power components and all sorts of heat exchangers, radiators, and fittings.

The product we are reviewing today is the Watercool HEATKILLER IV PRO for Threadripper. We have previously had no relationship with Watercool, but HardOCP readers suggested that we review its Threadripper block, so we reached out to Watercool and asked for a sample. It took us a while to get it in hand, since Watercool had the audacity to put us behind its paying customers in terms of priority! Of course I am kidding. It is nice to see a company put its customers first. Heck, there are even some enthusiast water cooling companies out there, that will sell you a product that does not perform as it should, apologize for that, and instead of letting you return the product and get your money back, they give you a $25 coupon on your next purchase. Remember, vote with your wallet.

This is what Watercool has to say about its new block:

The main feature of the block is the completely new cooling structure that is perfectly adjusted to the specific Threadripper package. Instead of simply extending the cold plate, we developed a completely new and unique water block. For example, the cooling structure is more than 80% larger than that of a regular HEATKILLER IV PRO. Flow and bleeding characteristics were also optimized. All these features let the HEATKILLER IV PRO for Threadripper block become a true performance monster!

Below is our unboxing and breakdown video that we did last week. It is a quick 7 minute look of what is in the box and we take the block apart to show you exactly what the design looks like on the inside. One thing worth noting in the video is the hex key tool that comes with the kit. I did a lot of cleaning and organizing around the office in the last week, and it seems as though I lost the included tool, so the only place it is shown, is in the video below.

The packaging that the HEATKILLER IV PRO comes in is, well, for lack of a better term, ugly. However, what we truly look for in a box is if our hardware arrived perfectly intact, which it did.

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These are a couple of pictures of the HEATKILLER IV installed on our ASUS ROG STRIX X399E Gaming motherboard using Corsair "AM4" RAM.

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The Watercool block is very utilitarian in its design, which I very much appreciate. There is truly nothing included in the this block's design that is not "needed," beside the Frag Harder Disco Lights, but of course everything computer oriented on the planet has to have that now. Thankfully, those are easily removed as we show in the video above. We generally remove these for temperature testing as these blocks are easier to deal with without RGB pigtails getting in the way.

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