CAUTION: This CPU cooler can only be used with Ampere Altra and Altra Max ARM processors and their LGA4926 socket. It is INCOMPATIBLE with AMD and Intel platforms. Perfect combination with ASRock Rack ALTRAD8UD-1L2T motherboard and all Ampere Altra family CPUs (e.g. M128-30, M128-28, M128-26, M96-30, M96-28, Q80-30, Q80-28, Q80-26, Q64-30, Q64-26, Q64-22 or Q32-17) Compact 92mm size (134mm height) for excellent compatibility and 4U support, high cooling performance thanks to 4 heatpipes, dual tower design and two ultra-quiet NF-A9 premium fans, ideal for whisper-quiet Ampere workstations and servers Airflow path parallel to the long axis of the socket, ideal for systems where the exhaust fans of the chassis are in this direction Pre-applied NT-H2 thermal compound and easy, straightforward installation with included mounting tool