10/25/2012
How's Your Memory?
This is not a quiz to determine whether you tend to lose your keys or forget to pick up milk for the kids. "How's your memory?" is a question IT people frequently ask when clients report unusually slow running computers, system freezes and crashes, and other seemingly ominous symptoms. So the next time your PC Tech asks about your memory, here is what you need to know:
Types of Memory Used- There are two types of memory or storage that your computer uses: RAM - Random Access Memory and the hard drive. RAM is a temporary memory (stored on physical "sticks" of "chips" that fit into "slots" on the motherboard) that the operating system uses to open and run applications. RAM is used to help perform the instructions the programs need to operate. RAM only holds data while the computer is on. The hard drive, however, will store data whether the computer is on or off. The memory on the hard drive is used to save information (usually on spinning magnetic "disks" that use an arm to "write" data to the drive) entered or created using the programs on the computer. A larger hard drive will not cause the PC to run faster; it will just be able to store more data.
Thus, when a PC Tech asks about your memory, he/she is usually referring to your RAM... because the more RAM you have, the faster and more effectively the computer will run. This is important when multiple programs/applications are open simultaneously; users notice the computer runs considerably slower because all the programs have to share the limited RAM to carry out their duties. Sometimes when only one or two programs are open, RAM utilization will suddenly spike or run high: This can be a sign of a virus. Excessive memory usage can also occur because installing normal applications can cause a small piece of the software (called a "process") to run silently in the background, taking away usable memory for other applications. It's possible to have a hundred or more processes running at once and not have many programs running.