CPU

HPE Celeron Processor 2.80-GHz/533 MHz Front Side Bus, Factory Installed Option (FIO)

HPE Intel Pentium 4 processor 640 - 3.20GHz (Prescott-T with Hyper-Threading, 800MHz front side bus, 2MB Level-2 cache, socket 775)

HPE Intel Pentium 4 processor 650 - 3.40GHz (Prescott-T with Hyper-Threading, 800MHz front side bus, 2MB Level-2 cache, socket 775)

HPE Intel Xeon MP 3.66GHz (Cranford, 667MHz FSB, 1M cache, 604 pin INT3 socket)

HPE Intel Xeon 3.66GHz (Cranford, 667MHz FSB, 1MB Cache, 604-pin INT3 socket) - FIO

HPE Intel Pentium II Xeon processor - 400MHz (Drake, 100MHz front side bus, 512KB Level-2 cache, Slot 2) - Includes heat pipe