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- Viewed 145k times52edited Jun 27, 2016 at 8:10
Hans and DarkDust answer covered i386/i686 and amd64/x86_64, so there's no sense in revisiting them. This answer will focus on X32, and provide some info learned after a X32 port.
x32 is an ABI for amd64/x86_64 CPUs using 32-bit integers, longs and pointers. The idea is to combine the smaller memory and cache footprint from 32-bit data types with the larger register set of x86_64. (Reference: Debian X32 Port page).
x32 can provide up to about 30% reduction in memory usage and up to about 40% increase in speed. The use cases for the architecture a...
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x86-64 (also known as x64, x86_64, AMD64, and Intel 64) is a 64-bit version of the x86 instruction set, first announced in 1999. It introduced two new modes of operation, 64-bit mode and compatibility mode, along with a new 4-level paging mode. With 64-bit mode and the new paging mode, it supports … See more
VIA Technologies introduced their first implementation of the x86-64 architecture in 2008 after five years of development by its CPU division, See more
Although nearly identical, there are some differences between the two instruction sets in the semantics of a few seldom used machine … See more
Intel 64 is Intel's implementation of x86-64, used and implemented in various processors made by Intel.
History See moreIn supercomputers tracked by TOP500, the appearance of 64-bit extensions for the x86 architecture enabled 64-bit x86 processors by AMD and Intel to replace most RISC … See more
Wikipedia text under CC-BY-SA license x86 vs x64: What’s the Difference? (64-bit vs 32-bit)
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WebJul 27, 2023 · What Do They Mean? 32-bit hardware and software are often referred to as x86 or x86-32. 64-bit hardware and software are often referred to as x64 or x86-64. 32-bit systems utilize data in 32-bit pieces, …
WebFeb 24, 2020 · x86 and x64 are families of instruction set architectures for computer processors developed by Intel. x86 refers to 32-bit systems while x64 refers to 64-bit systems that can handle more memory and data.
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