Modders Turn Threadripper 9995WX IHS Into A Waterblock With Amazing Results

Modders Turn Threadripper 9995WX IHS Into a Waterblock With Amazing Results

Last updated: 2026/02/09 at 9:16 PM

News Room Published 9 February 2026

Cooling high-end workstation CPUs is hard, but less so if you turn their integrated heat spreaders (IHS) into a waterblock and use a sub-zero chiller. That’s exactly what mod channel Geekerwan did with a 96-core AMD Threadripper Pro 9995WX, and the performance results were incredible. Even when it was pulling over 1,300W, as VideoCardz reports.

The AMD Ryzen Threadripper Pro 9995WX is a powerful high-end desktop (HEDT) CPU with 96 Zen 5 cores and a boost clock up to 5.4GHz. Its default TDP is 350W, but it can easily pull over 800W when really pushed. When overclocked? Even more so.

But that kind of power draw and heat output can be tamed. Geekerwan cut coolant channels into the IHS itself, using a little of the micro-fluidic cooling ideas Microsoft discussed last year. They routed the channels to most effectively pull heat from the chiplets, and set it up with two inlet and outlet channels so that the coolant would hit internal channels right on top of each chiplet, and exit on the sides to maximize coolant contact with the hottest parts of the chip.

This block was hooked up to a large 140L external reservoir and an industrial chiller rated for 800W of cooling power. Dual 50W Bosche pumps were used from a Mercedes vehicle, to move the large volume of coolant it required.

The results of all that cooling effort paid off in overclocking and benchmarking. Geekerwan was able to maintain an overclock of 5.325GHz across all 96 cores simultaneously, resulting in a Cinebench R23 score of 205,000 points. Cinebench 2024 yielded 10,080 points, while they managed 41,478 points in Cinebench 2026.

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At its peak, the Threadripper CPU pulled over 1,340W, while the whole system was drawing over 1,700W. Despite this heavy power draw, though, CPU temperatures reached a peak of just 52 degrees.

As VideoCardz highlights, this is an extremely expensive CPU (over $12,000) in its own right, and the machining necessary to create such a modification is expensive and rare too. But the results are impressive and suggest that there may be a market for waterblocks that are designed to replace CPU heat spreaders. Whether Intel or AMD would ever sell chips without the IHS is another matter, but if you’re willing and able to install a new IHS/waterblock, you’re almost certainly happy to remove one.