Tailored custom version for sTRX4/TR4/SP3 (Ryzen Threadripper / Epyc)
Please note that the NH-U9 TR4-SP3 is a dedicated version for the AMD sTRX4/TR4/SP3 socket. Due to its customised larger base, it cannot be used on any other sockets and is incompatible with Noctua’s standard mounting kits.