128GB Total. 4pcs 32gb DDR4, 2400MHz, ECC, CL17, 2R, X4, 1.2V, DIMM, 288-pin Brand BY Computer Memory Solutions LIFETIME WARRANTY BY Computer Memory Solutions Maximum Memory: 256 GB with ECC RDIMMs Or 512 GB with
LRDIMMs Expansions: 8 Socket (s) Memory will clock down to run at optimal speeds depending on processor model installed. This system supports Registered ECC (RDIMM) or Load Reduced (LRDIMM) memory. Mixing RDIMM and LRDIMM is not supported within this system.
Compatible with: ASRock Server Board EPC612D8, EPC612D8A, EPC612D8A-TB, EPC621D8A