DELL P026R, Intel® Xeon® 5000 Sequence, LGA 1366 (Socket B), 45 nm, Tray, Intel, X5570 DELL P026R. Processor family: Intel® Xeon® 5000 Sequence, Processor socket: LGA 1366 (Socket B), Processor lithography: 45 nm. Memory channels: Triple-channel, Maximum internal memory supported by processor: 144 GB, Memory types supported by processor: DDR3-SDRAM. Market segment: Server, Number of Processing Die Transistors: 731 M, Processing Die size: 263 mm². Processor package size: 42.5mm x 45mm. Maximum internal memory: 144 GB, Maximum internal memory: 147456 MB, Cache memory: 8 MB