To begin, a quick summary of what is a random access memory (aka RAM) and its use in a computer. The RAM can be likened to a rapid transition from voice information between your hard drive and your processor. When your computer wants to use information, he therefore gets on your hard drive and temporarily stored on the RAM. RAM is much faster than your hard drive, this will avoid ending up with a swift processor awaits them permanently information. It is therefore understandable that a larger amount of memory can store more information and thus to speed up processing. It has gone from computers with 512MB of memory there is not long to racing models with 16 or 32 GB today. Most computers, however rotate with 4 GB of RAM, which is enough for a normal user on Windows as for Mac. It may be necessary to add or memory modules to accelerate the operation of his computer. But it also happens that you loose strip already installed, and you must then replace it.