448365-B21 I HP Intel Xeon DP Quad-core E5472 3.0GHz CPU SLANR 462980-001Technical Information Processor Manufacturer Intel Processor Core Quad core (4 Core) Clock Speed 3 GHz Bus Speed 1600 MHz L1 Cache 256 KB L2 Cache 12 MB Process Technology 45 nm Processor Technology Virtualization Technology Processor Technology Enhanced SpeedStep Technology Processor Technology Extended Memory 64 Technology Processor Socket Socket J Power Description Input Voltage 1. 2 V DC HP Part Numbers: 462980 001, 457881 001, 448365 B21, SLANR