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x86-64

The 64-bit extension of the x86 instruction set, allowing for much larger amounts of virtual and physical memory.

Categoryhardware

Overview

x86-64 (also known as AMD64 or Intel 64) is the 64-bit version of the x86 architecture. It was originally designed by AMD and later adopted by Intel. It is the standard architecture for modern PCs and servers.

Key Advantages

  • Memory Addressing: Can address vastly more RAM than the 4GB limit of 32-bit x86.
  • Performance: Includes more registers and other architectural improvements that speed up modern software.
  • Compatibility: Can run 32-bit x86 software natively without a performance penalty.

Related Terms

x86Instruction Set ArchitectureCentral Processing Unit