Key Architectural Features AMD Athlon™ X2 Dual-Core Processors 

The industry's first true on-die dual-core x86 processor

• Inter-core communication at CPU speed
• Provides dual-core system capability in single-core system configurations

The AMD64 core provides leading-edge performance for both 32-bit and 64-bit applications

• AMD64 technology provides full-speed support for x86 code base for uncompromising performance
• 40-bit physical addresses, 48-bit virtual addresses
• Sixteen 64-bit integer registers
• Sixteen 128-bit SSE/SSE2/SSE3 registers
• AMD Digital Media XPress™ provides support for SSE, SSE2, SSE3 and MMX instructions

A high-bandwidth, low-latency integrated DDR memory controller 

• Supports PC2-6400 (DDR2-800), PC2-5300 (DDR2-667), PC2-4200 (DDR2-533) or PC2-3200 (DDR2-400) SDRAM unbuffered DIMMs
• Support for 64-bit DDR2 SDRAM memory
• Up to 12.8GB/s memory bandwidth

HyperTransport™ Technology for high speed I/O communication

• One 16-bit link up to 2000MHz
• Up to 8GB/s HyperTransport™ I/O bandwidth
• Up to 20.8GB/s total delivered processor-to-system bandwidth (HyperTransport bus + memory bus)

Large high performance on-chip cache

• 64KB Level 1 instruction cache per core
• 64KB Level 1 data cache per core
• Up to 1MB Level 2 cache per core

AMD PowerNow!™ Technology (Cool’n’Quiet™ Technology) for quieter operation and reduced power requirements

Recognized in 2005 by the US Environmental Protection Agency for the advancement of energy efficient computer technology