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wiki/concepts/x86_64.md
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title: "x86_64"
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type: concept
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tags: [linux, 架构, cpu]
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date: 2026-04-16
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---
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## Definition
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x86_64(也称 x64)是 64 位 x86 架构,是 Intel 和 AMD 处理器使用的指令集扩展。
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## Aliases
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- x64
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- amd64
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## Key Characteristics
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- 64 位寻址能力,支持超过 4GB 内存
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- 向后兼容 32 位 x86 指令
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- 当前服务器和桌面主流架构
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## Related Concepts
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- [[ARM64]]:另一种 64 位架构,用于移动设备和部分服务器
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- [[ELF]]:Linux 可执行文件格式标准
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## Usage
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在 Linux 中可通过以下命令检测:
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- `uname -m` 输出 x86_64
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- `lscpu` Architecture 字段显示 x86_64
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