64GB DDR4, 288-pin DIMM, 2933MHz, Registered (buffered)
Cisco HX-SP-M64G2-RTH, 64 GB, DDR4, 2933 MHz, 288-pin DIMM
Cisco HX-SP-M64G2-RTH. Internal memory: 64 GB, Internal memory type: DDR4, Memory clock speed: 2933 MHz, Memory form factor: 288-pin DIMM, ECC