HP 381019-L21 - Intel Xeon processor - 3.2GHz (Nocona II, 800MHz front side bus, 2MB Level-3 cache, 604-pin) kit Retail
HP 381018-L21 - Intel Xeon processor - 3.0GHz (Nocona II, 800MHz front side bus, 2MB Level-3 cache, 604-pin) kit Retail
HP 373580-005 - Intel Xeon Single-Core processor - 2.80GHz (Nocona, 1MB Level-2 cache, 800MHz front side bus, supports Hyper-Threading and Extended Memory 64 Technology (EM64T), PPGA 604-pin socket) - Includes thermal grease and alcohol pad Retail