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Notebook Computer Guide*
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Notebook Computer Terms
... DDR2 SDRAM
DDR2 SDRAM - A standard that can boost conventional SDRAM memory up to speeds well over 200MHz and beyond. For example, the IBM ThinkPad T43, thanks to the Sonoma Chipset or platform has 533MHz DDR 2 SDRAM.
The new standard is DDR3 SDRAM Memory and if you're wondering what all those letters mean: DDR stands for "double data rate" and in this case it's type three. The SD stands for "synchronous dynamic" and RAM, of course, stands for "random access memory".
RAM is extremely important to the smooth running of your computer, especially if you're handling/processing large amounts of data, as in video editing or game playing. In those cases, you will also need a dedicated graphics card (GPU) which will have its own separate RAM to cope with the high performance levels.
DDR2 and DDR3 are not backward compatible and if you want to know about these two different type of RAM - try viewing this excellent YouTube video by NCIX Tech:
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