If you own an old laptop and want to make it run faster then maybe the easiest way is upgrading its RAM. Read this post to learn how to make an Laptop RAM Upgrade.
Almost every laptop has a removable cover on its underside. Read your laptop’s manual if you can’t locate it. The memory slots are placed under this cover. Remove it and see if there is an empty slot for the new memory. If you don’t have a free slot available, then you will have to remove one or both of the existing modules. Before starting the upgrade see your laptop manual to find out what type of RAM is supported.
The most commonly used types of RAMs are listed below.
SDRAM PC 100/133
pin count – 144 operating voltage – 3.3v
pin count – 200 operating voltage – 2.6v
DDR 2 RAM
pin coumt – 200 operating voltage – 1.8v
pin count – 204 operating voltage – 1.5v
The 200-pin SO DIMMs (DDR and DDR2) are almost indistinguishable so be careful when you buy such RAMs. The only difference between them is location of the notch. If the notch is located further outboard, it indicates the DDR class of memory. When the notch is located nearer the center of the board, it indicates DDR2. These two types of memory are not interchangeable, and the different notch locations prevent incorrect installation.
ARTICLE SOURCE: http://pc-level.com/2009/02/laptop-ram-upgrade/
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