If your computer tends to be slow while opening multiple programs, large documents, or graphic files, then you may want to consider upgrading your RAM.  To know how much you can add to your system, check the specifications that came with your computer.

Increasing your RAM is the best way to increase your system's performance.  It speeds up the way your computer works because it lessens the time that it takes for the information to pass between the CPU and the hard drive or other storage media.  This is because additional RAM provides your system more room to process data and execute programs simultaneously.

For more information about RAM, please click on the ff. link RAM vs. Virtual Memory.