Noctua’s small-profile Threadripper cooling powerhouse dresses and impresses. Noctua has released a trio of coolers directly targeted at AMD's Threadripper and Epyc sockets in the NH-U12S TR4-SP3, NH-U14S TR4-SP3 and, today's subject, the dual-fan NH-U9 TR4-SP3. Designed with a shorter cooling tower, the twin, 92mm NF-A9 PWM fans team up in push/pull configuration to direct airflow through the six-heatpipe cooling stack and produce the same cooling potential of larger coolers. As a somewhat compact cooling powerhouse, the NH-U9 TR4-SP3 is impressively capable of taming overclocked Threadripper CPUs in cramped system builds.