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31684 Rev. 3.00 September 2004
Builder’s Guide for AMD Athlon™ 64 Processor-
Based Desktops and Workstations
Chapter 1 AMD Athlon™ 64 Processor Key
Architectural Features
The key architectural features of an AMD Athlon™ 64 processor-based system include AMD64
architecture, integrated DDR DRAM memory controller, HyperTransport™ technology, and many
other features.
Figure 1
Figure 1. AMD Athlon™ 64 Processor Architecture
shows a block diagram of the AMD Athlon 64 processor architecture.
1.1 The AMD64 Architecture
AMD64 architecture allows end users to run existing, installed 32-bit applications and operating
systems at peak performance, while providing a migration path that is 64-bit capable. It is
designed to enable 64-bit computing while remaining compatible with the vast x86 software
infrastructure. AMD64 architecture represents a new class of computing, enabling a single
architecture across 32- and 64-bit environments.
Chapter 1
AMD Athlon™ 64 Processor Key Architectural Features 9