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This paper describes a 95 W dual-core 64-bit Xeonreg MP processor implemented in a 65 nm 8 metal layer process. Each processor core has a unified 1MB L2 cache and supports the Intelreg Extended Memory 64 Technology and the Hyper-Threading Technology. The shared L3 cache has extensive RAS features including the Intelreg Cache Safe Technology and Error Correction Codes (ECC). The processor is designed and optimized to operate at a 95W thermal design power envelope at the target product frequency. The front-side bus operates at 667 MT/s or 800 MT/s in a 3 load topology that is compatible with existing platforms.