HP 219408-001 - Intel Pentium Pro processor - 166Mhz (512MB Level-2 cache) - Includes heat sink Retail
HP 1821-3452 - Intel Pentium Pro processor - 200MHz (P6, 512KB Level-2 cache) - Does not include heat sink - (Part of D4867A) Retail
HP 255395-001 - Motherboard (system board), with 512KB Level-2 cache - Includes 200MHz processor and heat sink Retail
HP 233551-001 - Intel Pentium III processor - 800MHz (Coppermine, 256KB Level-2 cache) - Includes heat sink Retail
HP 1821-3451 - Intel Pentium Pro processor - 166MHz (P6, 512KB Level-2 cache) - Does not include heat sink Retail
HP 1821-3450 - Intel Pentium Pro processor - 180MHz (P6, 256KB Level-2 cache) - Does not include heat sink Retail
