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a memory guide
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| Thu Jun 13, 2002 | 7:35A| PermaLink |
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Memory, much like everything else in your PC, runs on a clock. With each 'tick' of the clock, the memory can send or receive some data or the CPU can calculate something etc. DDR SD-RAM differs from ordinary SDR SD-RAM by transmitting or receiving data TWICE every clock cycle (on the rising and falling edges of the clock, which is similar to a sine wave), rather than once. While this effectively doubles it's speed, the actual performance of DDR RAM isn't double that of SDR RAM, due to similar latencies in the two types of RAM.
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FULL STORY @
RADIATIVENZ
(http://www.radiativenz.com/guides/memoryguide/index.shtml)
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