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19 wrz 2015 · 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.
9 mar 2024 · Modern versions of x86 processors (sometimes referred to as x86-32 or simply i386) provide 32-bit computing but also incorporate functionalities from their 64-bit. Their features can include MMX, SSE2, and SSE4, instructions, and some even support multi-core operations.
In the mid 1990s, it was obvious that the 32-bit address space of the x86 architecture was limiting its performance in applications requiring large data sets. A 32-bit address space would allow the processor to directly address only 4 GB of data, a size surpassed by applications such as video processing and database engines.
x86 started out as a 16-bit instruction set for 16-bit processors (the 8086 and 8088 processors), then was extended to a 32-bit instruction set for 32-bit processors (80386 and 80486), and now has been extended to a 64-bit instruction set for 64-bit processors.
27 lip 2023 · 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, while 64-bit systems utilize data in 64-bit pieces.
Nazwa x86 w odniesieniu do modelu programowego procesorów dotyczy pierwszych procesorów tego typu – od 8086 do 286, które były układami o architekturze 16-bitowej. Obecnie systemy i oprogramowanie 32-bitowe, często przyjmują oznaczenie x86 (procesory 16-bitowe wyszły z użycia).
On x86 systems, 32-bit vs. 64-bit directly refers to the size of pointers. That's all. It does not refer to the size of the C int type. That's decided by the particular compiler implementation, and most of the popular compilers choose 32-bit int on 64-bit systems.
