The NH-L9a-AM4 chromax.black is a completely black version of Noctua's award-winning low-profile cooler NH-L9a-AM4, designed for AMD Ryzen-based HTPCs and small form factor systems. The recipe for success remains unchanged thanks to the same super-flat heatsink and the proven NF-A9x14 PWM premium fan: strong cooling performance and excellent quiet operation at a height of just 37 mm, combined with RAM and PCIe compatibility. The chromax.black version, with its black fan and black-coated heatsink, also combines these advantages with a sleek stealth design. Completing this high-quality overall package is the renowned SecuFirm2 mounting system for AMD AM4 and Noctua's popular NT-H1 thermal paste.