Intel Xeon Quad-Core E5420 (2.50 GHz, 1333 MHz FSB, 80W) Option Kit
HP Intel Xeon Quad-Core E5420, Intel® Xeon®, LGA 771 (Socket J), E5420, 2.5 GHz, 64-bit, Server/workstation
HP Intel Xeon Quad-Core E5420. Processor family: Intel® Xeon®, Processor socket: LGA 771 (Socket J), Processor model: E5420. Market segment: Server