x64 vs x86 or 32bits vs 64 bits. Which one to choose and what all mean?

32bits 64bits x64 x86

So, did you want to install Operating System and don’t know which one to choose from 34bit and 64 bits or x64 and x86? There you will learn what does x64 and x86 and 32bit and 64 bits mean and you will know which one from this is more stable and which one you should install.


What does x64, x86 mean?

First of all  you have to know that:

x86 = 32bit
x64 = 64bit

So if you install x86 Operating System is will be 32 bits operating system and if you install x64 Operating System is will be on 64 bits.

X86 and X64 refer strictly to processor and 32bit and 64bit refer to applications and operating system.

So if you want to know more about x86 you have to read about 32bit and for x64 too.

 What does 32bit and 64bit mean?

32bit and 64bit is strictly determined by Processor Architecture and refer to the way it processes information!

For example: 32bit can not read more than 3GB of RAM memory, so if you have more than 4GB Ram installed on computer you should install 64bits Operating System.

Is my processor x64 or x86? Support my processor 64bit OS?

Before installing your Operating System you should know  which one to install: 32bit OS or 64bit OS. So let’s find out it.

Go to Start -> Right click on Computer -> Click Properties. Click on Windows Experience Index.

system info

Now click on View and Print detailed performance and system information.

processor information 64bit yes no

Here you will be able to see the current system type, number of processor core and if it is 64-bit capable.

Note: If you are already running 64-bit processor, it will show in the current system type and you will not see if it is 64-bit capable or not.

So if your computer is 64-bit capable i strongly recommended to install 64bits OS.

32bit vs 64bit. Which one to choose?

See the following example with Windows 7 32bit system requirements:

1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64)processor
1 gigabyte (GB) RAM
16 GB available hard disk space
DirectX 9 graphics device with WDDM 1.0 or higher driver

And now Windows 7 64 bit system requirements:

64-bit (x64) processor
20 GB available hard disk space
DirectX 9 graphics device with WDDM 1.0 or higher driver

So if your computer is not very performance you can choose 32bit OS because it require less than 64bit OS but you have to know that if you are using 32bit system you can not run 64bit applications, only vice-versa is possible!

Only if you have 64bit OS you can run booth: 64bit applications and 32bit applications.

Remember when you go to shopping that 64bit (x64 processor) is more efficient than 32bit and you should buy and x64 computer or device.


If you are going to buy a computer is must be x64 or x86 (x64 recommended) and you want to buy an application/OS you should buy 32bit/64bit application depending by your processor.

More exemplified if you buy a computer with x64 processor architecture you have to install all version of applications on 64 bits and vice-versa.

And i repeat: 32bit OS can use only 3GB Ram whilst 64bit os can use entire system resources and that 64bit OS can run 32bit applications.

Conclusion 2

I have long articles but i think it is full discussion about processor architectures (x64, x86) and 32bits, 64bits OS and applications and it should help you when you want to install your OS (Operating System) and when you buy a computer.

Please comment if you have something unclear.

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