What is the difference between x86 and x64

Question

What is the difference between x86 and x64 binaries here  we would like to download binaries for Windows 7  Ubuntu 12 04  32 bit options

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If you download Java Development Kit JDK  then there is a difference as it contains native libraries which differ for different architectures    x86 is for 32-bit OS x64 is for 64-bit OS   In addition you can use 32-bit JDK x86  on 64-bit OS  But you can not use 64-bit JDK on 32-bit OS   At the same time you can run compiled Java classes on any JVM  It does not matter whether it 32 or 64-bit

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quot When programming with C  you don   t usually need to worry about the underlying target platform  There are however a few cases when the Application and OS architecture can affect program logic  change functionality and cause unexpected exceptions  quot   quot It is common misconception that selecting a specific target will result in the compiler generating platform specific code  This is not the case and instead it simply sets a flag in the assembly   s CLR header  This information can be easily extracted  and modified  using Microsoft   s CoreFlags tool quot  https   medium com  trapdoorlabs c-target-platforms-x64-vs-x86-vs-anycpu-5f0c3be6c9e2

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Oddly enough it was an Intel thing not a Microsoft thing   X86 referred to the Intel CPU series from the 8086 to the 80486  The Pentium series still use the same addressing system  The x64 refers to the I64 addressing system that Intel came out with later for the 64-bit CPUs  So Windows was just following Intel s architecture naming

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x86 is a family of backward-compatible instruction set architectures based on the Intel 8086 CPU and its Intel 8088 variant    An instruction set architecture  ISA  is an abstract model of a computer  It is also referred to as architecture or computer architecture    A realization of an ISA is called an implementation  An ISA permits multiple implementations that may vary in performance  physical size  and monetary cost  among other things   because the ISA serves as the interface between software and hardware    Software that has been written for an ISA can run on different implementations of the same ISA  Exp  32bit or 64bit   This has enabled binary compatibility between different generations of computers to be easily achieved  and the development of computer families   Both of these developments have helped to lower the cost of computers and to increase their applicability  For these reasons  the ISA is one of the most important abstractions in computing today

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x86 is a 32 bit instruction set  x86 64 is a 64 bit instruction set    the difference is simple architecture  in case of windows os you better use the x86 32bit version for compatibility issues  in case of Linux you will not be able to use a 64 bit s w if the os does not have the long mode flag   Whatever I recommend if you have a windows 7 32 bit OS then go for 32bit or x86 binaries and as for Ubuntu 12 04 use command uname -a or grep lm  proc cpuinfo  grep lm  proc cpuinfo does not return value for 32 bit as 32 bit os does not has the cpuinfo flag  to know the architecture OS your OS then use the binaries according to your OS      Note  Remember you can always install 64 bit os in 32 bit system as long as it supports enhanced 64 bit   64 bit os works better some times for multi purpose work and also supports more ram than 32bits  also you can install 32bit s w in 64 bit os       OS   Operating system

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x64 is a generic name for the 64-bit extensions to Intel s and AMD s 32-bit x86 instruction set architecture  ISA   AMD introduced the first version of x64  initially called x86-64 and later renamed AMD64  Intel named their implementation IA-32e and then EMT64

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When it comes to memory usage  x86 is limited to circa 3   3 5 Gb  while x64 works fine with 4 Gb and more   Moreover  when it comes to Windows  x86 will run on both X86 and x64 processors  while x64 requires x64 processor only

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The difference is that Java binaries compiled as x86  32-bit  or x64  64-bit  applications respectively    On a 64-bit Windows you can use either version  since x86 will run in WOW64 mode  On a 32-bit Windows you should use only x86 obviously   For a Linux you should select appropriate type x86 for 32-bit OS  and x64 for 64-bit OS

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x86 is for a 32-bit OS  and x64 is for a 64-bit OS

[java] What is the difference between x86 and x64

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