Lenovo Intel Xeon L5638, Intel® Xeon® 5000 Sequence, Socket B (LGA 1366), 32 nm, L5638, 2 GHz, 64-bit Lenovo Intel Xeon L5638. Processor family: Intel® Xeon® 5000 Sequence, Processor socket: Socket B (LGA 1366), Processor lithography: 32 nm. Market segment: Server