[Tuto] Difference Between X86 Or X64 / 32 Or 64 Bits?


x86 or x64 simply refer to a processor family and at set of instructions that they use. In fgeneral, x86 is 32 bit, and x64 is 64 bit.

All the modern processors are 64 bits and can therefore allocate additional memory and perform faster operations.

x86 or x64
x86 or x64

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x86 or x64: A little story


x86 is an instruction set of 32 bit, x86_64 is an instruction set of 64 bits. The term x86 is derived from the fact that the first models which succeeded the Intel 8086 also had names ending in ” 86“.

In the past, x86 was a 16-bit architecture. Today it only exists in the form of a architecture 32.

AMD continued this trend in the field of 64. x64 is actually more correctly ” x86-64“, the 64-bit extension of x86.

These two improvements made it possible to reduce the cost of computers and to increase their performance. These are the reasons why x86 and x64 are one of the most essential concepts in computing today.

The 64-bit processors can perform both programs 32 and programs 64.

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On a 64-bit Windows, you can use either, since x86 will work in ” legacy“. On a Windows 32, you should only use x86.

For Linux, you must choose to use x86 for a 32-bit operating system and x64 for a operating system 64.

If you see a folder called ” Program Files (x86)“, This means that you are using a Windows version 64.

This folder contains the programs installed which are in 32. Your ” Program Files »Usual will contain your applications 64.

Whenever a program is running, a certain amount of RAM is allocated to him.

The amount of RAM allocated to it depends on operating system and of processor architecture.

A architecture 64 can allocate, in theory, 4,294,967,296 times more memory than an architecture 32.

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Software and compatibility


Additional memory is not the only reason to have a computer 64.

The processors 64 can process data in 64-bit segments, which is obviously more efficient than moving them by segments of 32.

Nowadays, developers should only create applications in 64, because this is the current standard. In the future, applications and operating systems 32 may no longer be supported.

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If you bought your computer during the Last 7-8 years, you should have a system 64. Don’t worry, I won’t force you to dig to find out when you bought your computer.

Now you have learned these few things:

  • Your computer may have a processor of 32 or 64.
  • Your operating system may be 32 or 64.
  • A computer equipped with 64 can work with operating systems 32 and 64 bits
  • A computer equipped with a processor 32 bit cannot work with operating system 64 bits

Now that you know the basics, let’s see how to find out what your system under Windows and Linux.

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Obtaining this information is quite easy on Windows.

Here’s how to do it in two easy steps.

  • Go to windows explorer, click with right mouse button on This PC and select Properties.
  • You will see system information on the next screen. Here you need to search the type of system.
  • As you can see in the image above, it says ” 64 operating system, x64 based processor“.
  • It means that the 64-bit Windows operating system is installed on a 64-bit processor.
Know the type of system
Know the type of system (x86 or x64)

This is how it works under Windows. Now let me show you how to know if you have a 32-bit or 64-bit system under Linux.



If you use Ubuntu like operating system or any other form of Linux, it is always easy to know if your system is in 32 or 64.

Keep in mind that we are talking about the processor, and not from operating system himself.

Find out if your computer is 32-bit or 64-bit under Linux
Find out if your computer is 32-bit or 64-bit under Linux (x86 or x64)

Open a terminal and run the following command:
lscpu

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