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The Curious Bag
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DDR SDRAM stands for double data-rate synchronous dynamic random access memory, and SDRAM is simply synchronous dynamic random access memory. These acronyms are used in reference RAM, or a computer's working memory.
Benefits
DDR SDRAM is capable of two calculations per clock cycle, while SDRAM is capable of only one, so DDR SDRAM makes your computer run up to twice as fast.
Types
DDR SDRAM can have speeds of 100 MHz to 200 MHz. However, since it can perform two operations per clock cycle, the effective speeds are between 200 MHz and 400 MHz.
Function
Both DDR SDRAM and SDRAM stores information being used by your computer's central processing unit so it can be accessed faster. When your random access memory is filled, the CPU must read data from the slower hard drive.
Misconceptions
Different types of random access memory are not interchangeable with each other. DDR SDRAM has 184 pins and is single-notched, while SDRAM only has 168 pins and is double-notched.
Warning
Your random access memory resets every time the power is cut off, so it is cleared each time you reset your computer and any information that is not saved to the hard drive is lost.
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