How to Find Out How Much Memory Is Left on Your Computer
The amount of Random Access Memory (RAM) on a computer critically influences its performance. Any running application is loaded from the hard drive to RAM, providing a fast data interchange with the computer's processor. If running applications and system processes use almost all the physical memory, it would inevitably slow down your computer. In some cases, a computer might freeze, restart or produce a “blue screen” of failure. Task Manager in Windows and a utility program “free” in Linux allow you to monitor the amount of memory being used and hence determine how much free memory is left.
In Windows 7 and Vista
Log on to a user account.
Right-click on the taskbar, typically located at the right-bottom corner of the screen, and select "Task Manager" in the context menu. Alternatively, simultaneously press "Ctrl," "Alt" and "Delete" and click "Start Task Manager."
Select the tab "Performance" in Task Manager and read the total amount (in Megabytes) of RAM on your computer under "Physical Memory" and "Total." For instance, "Total 2048."
Read the amount of memory (given as a percent) currently used on your computer in the very bottom line of the "Task Manager" window--for example, "Physical Memory: 68%."
Subtract the percentage from Step 4 from "100" to calculate the amount of free memory as a percent. Then multiply the percent number by the total memory from Step 3, and divide by 10 to calculate free memory in megabytes. In this example, it is (100 - 68) x 2048 / 100 = 655 MB.
Click the Gnome menu "Applications" and "Accessories" in Linux RedHat, Ubuntu or Fedora.
Click "Terminal" to open a Linux command prompt window.
Type "free -m" and press "Enter" to obtain information about Linux memory.
Read the amount of available memory (in megabytes) under "Mem" and "free."
Tips & Warnings
- If the amount of free memory is low, consider closing some of running application before launching new programs.