Fujitsu AMD EPYC 7643, AMD EPYC, Socket SP3, 7 nm, AMD, 2.3 GHz, 64-bit Fujitsu AMD EPYC 7643. Processor family: AMD EPYC, Processor socket: Socket SP3, Processor lithography: 7 nm. Memory channels: Octa-channel, Memory types supported by processor: DDR4-SDRAM, Memory clock speeds supported by processor: 3200 MHz