Lenovo Intel Xeon Processor E5640, Intel® Xeon® 5000 Sequence, Socket B (LGA 1366), 32 nm, Tray, E5640, 2.66 GHz Lenovo Intel Xeon Processor E5640. Processor family: Intel® Xeon® 5000 Sequence, Processor socket: Socket B (LGA 1366), Processor lithography: 32 nm. Market segment: Server