With the arrival of the second generation of Threadripper processors comes Precision Boost 2 and Precision Boost Overdrive which changes the testing process when it comes to heatsinks.  PB2 means that your processor will not let its self get above 68C and will reduce power and frequency to accomplish that.  This means that when testing, what [H]ard|OCP is looking for is clocks and power draw, not temperature.  Check out how they accomplished this, as well as the performance of these three Noctua coolers, as compared to themselves, the WraithRipper and the Silver Arrow.

"We take all three Noctua air coolers built for AMD Threadripper CPUs and put these to the test on both the 2950X and 2990WX. We run the NH-U14S, NH-U12S, and NH-U9 through the paces with both Precision Boost 2 and Precision Boost Overdrive using multiple fan configurations and compare these to the Silver Arrow and Wraith Ripper too."

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