Upgrade #2: Adding RAM to a Portable PC Upgrading memory on a portable PC is a little different than with a desktop system. On one hand, it's easier; memory is typically added through an easily accessible compartment on the bottom of the unit. On the other hand, it's more complicated; every manufacturer (and seemingly every model) uses different non-standard memory types and form factors. caution  | When you're installing RIMM modules, you cannot leave any RIMM sockets empty. Any empty slots must be occupied by a continuity module (sometimes called a continuity RIMM), which looks like a standard RIMM but with no memory chips installed. |
When shopping for laptop memory, you do it by manufacturer and model number. Some portable RAM comes in modules, some on units that look like little credit cards. You have to get the exact type of memory used by your particular PC, whatever that might happen to be. Installing the memory, however, should be a snap literally. On most models you use a screwdriver to open a small compartment on the bottom of the unit, and then snap the new memory into place. Just follow these steps: Close Windows and power off your PC. Locate and open your PC's memory compartment. Insert the new memory module or card, per the manufacturer's instructions. Reinstall the cover to the memory compartment and power up your portable.
note  | On some portables you may need to remove an old lower-capacity memory card to add a new higher-capacity one. |
As with desktop systems, your portable should automatically recognize the new memory on startup. THE ABSOLUTE MINIMUM Increasing system memory is one of the most popular upgrades for all levels of computer users. Just remember these key points: The more memory you have installed, the faster and smoother your system will run. If you're running Windows 98 or Windows Me, consider installing at least 128MB of RAM; if you're running Windows XP, go with at least 256MB and 512MB is even better. RAM chips come preinstalled on memory modules. There are three primary types of modules: SIMMs, DIMMs, and RIMMs. There are five primary types of RAM chips in use today: SDRAM, DDR SDRAM, RDRAM, FPM DRAM, and EDO DRAM. You have to buy the specific kind of memory (module and chip type) that is used by your computer system and there are a lot of variations in use by different PC manufacturers. Installing more memory is as simple as powering off your computer, inserting the new module into an empty memory slot, and then restarting your PC.
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