How to Find Out How Much Memory Your PC Has
Before purchasing or attempting to install a new program on your computer, make sure your PC has at least the minimum amount of RAM required by the program. If your computer doesn't have enough memory, the program may not run. In some cases, you can't even install the program unless your computer meets the minimum requirements. The Performance Information and Tools section of the Control Panel displays detailed information about your system, including the amount of RAM and dedicated graphics memory.
Viewing Detailed System Information
Before you purchase the program, look at its minimum system requirements to make sure your computer can run it. Press "Windows-X" to expand the Power User menu in Windows 8.1 and click "Control Panel." Click the "System" link and then click "Performance Information and Tools" in the left pane. Click the "View and print detailed performance and system information" link to view detailed information about your computer. The amount of memory is listed in the "Total amount of system memory" section. To print the report, click the "Print this page" button. If you want to purchase or install a game, ensure your video card has at least the minimum amount of dedicated graphics memory. Although games will run if your computer meets the minimum requirements, you may encounter performance issues -- consider upgrading your computer to add more RAM to fix the problem.