RAM comes on chips that slot into your motherboard.
RAM is memory that supports your computer's processor, which is basically the brain of your computer. Generally speaking, the more RAM you have, the faster your computer will run.
RAM
RAM stands for Random Access Memory. It is not the storage space on your computer; it is the amount of memory available for random access by your processor. Generally, the more RAM you have, the faster your computer will run. RAM is bought on small circuit boards that slot into your motherboard.
DDR SDRAM
The "SD" in SDRAM stands for Synchronous Dynamic, which means it synchronizes more efficiently with your computer, and "DDR" stands for Double Data Rate. This doubles the speed of standard SDRAM. DDR SDRAM has been standard since 2007. You can also get DDR2 and DDR3 SDRAM, each of which doubles the data rate of its predecessor.
Quantity & Cost
Generally, 1GB of RAM is not too expensive and will be sufficient for most computer users. As October 2010, you can get 1GB of DDR2 SDRAM for $29.99.
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