HP 381803-001 - System board assembly - With two single-core heatsinks, two dual-core heatsinks, and LED board - For Dual-Core AMD Opteron processor support Retail
HP 441249-001 - System I/O board (motherboard) - Supports AMD Opteron and select AMD Athlon 64 processors - Includes base pan assembly, alcohol pad, and thermal grease syringe - Processors must be the same spare part number Retail