Timetec Hynix HMAA8GR7MJR4N 64GB DDR4 2933MHz PC4-23466 ECC Registered Dual Rank for High Performance Computing(HPC) AMD EPYC 7000 Series/Rome and Backward Compatible Server Memory RAM Upgrade(64GB) HMAA8GR7MJR4N-WM DDR4 2933MHz PC4-23466 288 Pin Registered ECC 1.2V CL21 Dual Rank 2Rx4 based 4Gx4 Compatible with (But not Limited to) High Performance Computing (HPC) / AMD EPYC 7000 series/ AMD EPYC Rome Backward Compatible to 2133MHz Module Size: 64GB Package: 1x64GB A must For Server, Not For Desktop/Laptop For Selected Supermicro, Gigabyte Guaranteed  1 year warranty from Purchase Date Free technical support (support@timetecinc.com) Timetec Website: https://www.timetecinc.com/