Xeon 2800 CPU - 257915-B21 - 2.8Ghz - 512k - 400Mhz - Processor Option Kit - 603-pin PPGA INT3 Socket 603 For Factor - 64Gb Adressable Memory - 36-bit NetBurst Microarchitecture - Induction Set X86-to-RISC - 36-bit NetBurst Microarchitecture - Streaming SIMD Extention 2 (SSE-2) - Hyper-Pipelined Technology (HPT) - 1.5V DC Input Voltage - Suitable for 370/380 G3 Servers