If you are looking at building an AMD TR4/SP3 platform for either a Ryzen Threadripper or Epyc processor you'll likely find yourself looking for a CPU cooler. The AMD Ryzen Threadripper 1950X 16-core processor has a default TDP of 180 Watts and a maximum temperature of 68C for proper precision boost operation and 95C before thermal shutdown. One wouldn't expect there to be many coolers that can hand that, but there are now over 20 all-in-one water cooling solutions and at least five air cooler options that are able to handle a Ryzen Threadripper processor at stock clock speeds. Read on to see how the Noctua NH-U9 TR4-SP3, Noctua NH-U12S TR4-SP3 and Noctua NH-U14S TR4-SP3 do on a Threadripper 1950X CPU as we compare them to a liquid cooler!