HP Intel Xeon E5-2603, Intel® Xeon® E5 Family, LGA 2011 (Socket R), 32 nm, E5-2603, 1.8 GHz, 64-bit HP Intel Xeon E5-2603. Processor family: Intel® Xeon® E5 Family, Processor socket: LGA 2011 (Socket R), Processor lithography: 32 nm. Memory types supported by processor: DDR3-SDRAM, Memory clock speeds supported by processor: 1333 MHz. Market segment: Server