Computer RAM Capacity

How big memory is useable in computer

Memory or RAM (Random Access Memory ) is a computer hardware components. It helps to run different kinds of big programs and software in computer. The big memory you have in your computer, you can run big programs smoothly. But the question is, How big memory is usable in computer ?

Well, “How big memory is usable in computer” it depends on computer hardware and software architecture.

Let’s have a look on below discussion.

How big memory is usable in computer ?

Computer Processor: Processor is a physical hardware components in computer and looks like below picture

How big memory is usable in computer

This computer processor basically available in two types.

32 Bit Computer Processor: In 32 bit computer processor, you can use maximum 4 GB Computer Memory. If you put more then 4 GB Memory in 32 bit processor supportable computer, it will remain unused. But in windows 7 starter it limits to maximum 2 GB.

64 bit Computer Processor: You can use minimum 192 GB Memory in 64 bit processor supportable computer. If you are a windows 7 user, you can use maximum 8 gb memory in Home Basic Operating System.

I draw a table for you to understand easily for computer memory limitation. Here is the list for Windows 7 Operating System:

Edition 32 bit ( X86) operating system X64 Bit Operating System
Windows 7 Ultimate 4 GB  192 GB
Windows 7 Enterprise 4 GB 192 GB
Windows 7 Professional 4 GB 192 GB
Windows 7 Home Premium 4 GB 16 GB
Windows 7 Home Basic 4 GB 8 GB
Windows 7 Starter 2 GB Not Applicable

 Common FAQ by readers:

1. How can I find my computer details like computer types, memory, computer model number all in one together ?

Answer: To find your computer details all in one together follow this steps:

i. In Windows 7, Click on Start, go to run and type dxdiag. Then Click OK. Shown in below picture

How big memory is usable in computer

ii. Computer will generate a report for you including your computer details such as computer processor, memory, operating system, computer model number. Like below picture.

How big memory is usable in computer


2. My computer has 64 bit processor but it shows only 4 GB Memory or RAM usable. Why it happen?

Answer : Check your computer operating system. If you have installed 32 bit operating system instead of 64 bit operating system then you will not able to utilize 64 bit processor features.

4 thoughts on “Computer RAM Capacity

  1. I have seen people with 4GB ram using x64bit instead of x86 even though like you said here that windows7 x86 supports upto 4GBs of RAM. Then what’s the catch there? Does using x64 gives any kind of performance boost?

    1. Hi Rafi,

      You got a good point here. X64 bit processor has the speed of two time 32 bit processor. So defiantly you will get a better user experience with x64 bit operating system.

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