AMD64 technology enables leading-edge software performance and new experiences & capabilities. Specifically, AMD64 technology:

* Provides high performance levels without any changes to existing 32-bit applications* Allows both high-performance 32-bit and 64-bit computing, offering end users an easy, compelling and affordable means to take advantage of tomorrow's emerging applications* Additional 64-bit internal registers for computing performance* Addressability beyond 4GB for new capabilities* Enhanced Virus Protection