Timetec Hynix HMAA8GL7CPR4N 64GB DDR4 3200MHz PC4-25600 ECC Load Reduced for High Performance Computing(HPC) / AMD EPYC/Intel Cascade Lake Xeons(CLX) and Backward Compatible Server RAM Upgrade(64GB) HMAA8GL7CPR4N-XNTG DDR4 3200MHz PC4-25600 288 Pin ECC Load Reduced 1.2V CL22 Quad Rank 4Rx4 based 4Gx4 Compatible with (But not Limited to) High Performance Computing (HPC) / AMD EPYC 7000 series/ AMD EPYC Rome / Intel Cascade Lake Xeons (CLX) Backward Compatible to 2133MHz Module Size: 64GB Package: 1x64GB A must For Server, Not For Desktop/Laptop For Selected Acer , AIC , ASRock , ASUS/ASmobile , Cisco , Dell , Fujitsu , Gigabyte , Hitachi , HP/Compaq , Huawei , Intel , Lenovo , NEC , Supermicro , Tyan Computers Guaranteed  1 year warranty from Purchase Date