Upgrading your memory is typically the easiest and least expensive way to upgrade your computer for a significant boost in performance. The computer's RAM memory is its workspace, or where all of the instructions it needs to act on are stored temporarily. A computer with more RAM can work more efficiently because it does not need to retrieve information from the hard disk drive as often. A memory upgrade is particularly helpful for users who work with large files, have more than one program open at one time, or use memory-intensive applications such as games or graphics and video editing software.
The more processing you require your computer to perform, however, the more RAM you'll need. If you use your desktop for work in a home office and you often use several different types of programs simultaneously, including e-mail, Web surfing, word processing, spread sheets and software for presentations and illustrations, you desktop will probably require the upper end, maybe even as much as 1 GB of RAM. Serious gamers who use up a lot of graphics power need between 1 and 2 GB of RAM, while professionals who use a lot of 3-D modelling software should probably have 2 GB or more.
There are several signs indicating it may be time to upgrade your memory. If you see your mouse pointer turn into an hourglass for significant periods of time, if you hear your hard drive working, or if your computer seems to work more slowly than you expect, the reason is probably insufficient memory. When physical memory is insufficient, the system uses Hard Disk Space as memory. This is called "Virtual Memory". Since access time of Physical memory is in tens of Nanoseconds and Access time of Hard Disk is in Milliseconds, the system slows down considerably.
Once you are ready with the required amount of RAM needed for your Computer Memory Upgrade, follow the below steps for performing the memory upgrade-