Determining how much RAM is installed and available

Computer memory aka RAMTo check how much RAM is installed and available on your computer, follow the steps below.

Tip: Memory (RAM) and hard drive space are two completely different things. If you want to know how much information you can store on your computer, see the how to determine how much hard drive space page.

Tip: See our determining the type of memory my computer has page if you are trying to find memory specifications for upgrading your computer memory.

Windows 8 and 10
Windows Vista and 7
Windows 95, 98, ME, NT4, 2000, and XP
Windows 3.x
MS-DOS
Apple computer
Linux and Unix

Find how much RAM is installed and available in Windows 8 and 10

  1. From the Start screen or Start menu type ram
  2. Windows should return an option for "View RAM info" Arrow to this option and press enter or click it with the mouse. In the window that appears you should see how much installed memory (RAM) your computer has.

Windows 8 System Properties

Note: If a memory chip is not being recognized by the computer, it will not be included in the amount of memory listed under "Installed memory (RAM)" in the System Properties window.

View used and available resources

To determine the amount of available system resources, including memory, as well as what is currently being utilized, open the Task Manager. On the Processes tab, you can see which programs are running and using resources. On the Performance tab, you can see an overall picture of all the system resources. You can see how much memory is available next to the Available label.

Find how much RAM is installed and available in Windows Vista and 7

  1. From the Desktop or Start Menu, right-click on Computer and select Properties.
  2. In the System Properties window, the system will list "Installed memory (RAM)" with the total amount detected. For example, in the picture below, there is 4 GB of memory installed in the computer.

Windows 7 System Properties

Note: If a memory chip is not being recognized by the computer, it will not be included in the amount of memory listed under "Installed memory (RAM)" in the System Properties window.

or

  1. Click Start
  2. In the Search box, type "ram" without quotes and click the Show how much RAM is on this computer.

or

  1. Click Start
  2. Click System and Security
  3. Under System, click View amount of RAM and processor speed.

View used and available resources

To determine the amount of available system resources, including memory, as well as what is currently being utilized, open the Task Manager. On the Processes tab, you can see which programs are running and using resources. On the Performance tab, you can see an overall picture of all the system resources. You can see how much memory is available next to the Available label.

Finding RAM information in Windows 95, 98, ME, NT4, 2000, and XP

  1. Open the Control Panel
  2. Double-click the Systems icon.
  3. On the General tab, the amount of RAM currently installed and detected will be listed.

Note: If a memory chip is not being recognized by the computer, it will not be included in the amount of memory listed under "Installed memory (RAM)" in the System Properties window.

or

Windows 98, ME, 2000, and XP users can also run the System Information (msinfo32) program that comes pre-installed on the computer. Additional information about this program can be found on our msinfo32 definition page.

View used and available resources

To determine the amount of available system resources, including memory, as well as what is currently being utilized, open the Task Manager. On the Processes tab, you can see which programs are running and using resources. On the Performance tab, you can see an overall picture of all the system resources. You can see how much memory is available next to the Available label.

Find how much RAM is installed and available in Windows 3.x

Click File and then Exit Windows. Type mem at the MS-DOS prompt and press Enter.

  • See our mem command page for full information on this command.

Find how much RAM is installed and available in MS-DOS

Note: These instructions are for early versions of Windows and MS-DOS. If you are running a Windows command line the mem command is no longer supported.

Type mem at the MS-DOS prompt and press Enter.

Note: MS-DOS 6.2 will not accept or recognize more than 64 megabytes of RAM when typing mem.

  • See the mem command page for further information about this command.

Find how much RAM is installed and available with Apple computer's

Apple menuClick "About this Mac" in the Apple menu on Mac OS X to determine how much RAM is installed on an Apple Mac computer. The picture shows an example of the Apple Menu. As can be seen in the picture, the About This Mac is the first option.

In the About This Mac window that appears you are shown how much memory your computer has.

Finding RAM information in Linux and Unix

Linux and Unix command line users can use top command, which displays the total memory detected by the computer, how much memory is used, and how much is free.

Using the free command also gives you an overview of memory as well as how much of the memory is being stored in the buffers.