
Originally Posted by
bakwakkwak
Memory - Real Clock - Effective Clock - Maximum Theoretical Data Rate - Memory Module
DDR 200 - 100 MHz - 200 MHz - 1600 MB/s - PC-1600
DDR 266 - 133 MHz - 266 MHz - 2133 MB/s - PC-2100
DDR 333 - 166 MHz - 333 MHz - 2666 MB/s - PC-2700
DDR 400 - 200 MHz = 400 MHz - 3200 MB/s - PC-3200
DDR2 400 - 200 MHz - 400 MHz - 3200 MB/s - PC2-3200
DDR2 533 - 266 MHz - 533 MHz - 4266 MB/s - PC2-4200
DDR2 667 - 333 MHz - 667 MHz - 5333 MB/s - PC2-5300
DDR2 800 - 400 MHz - 800 MHz - 6400 MB/s - PC2-6400
DDR2 1066 - 533 MHz - 1066 MHz - 8533 MB/s - PC2-8500
DDR3 800 - 400 MHz - 800 MHz - 6400 MB/s - PC3-6400
DDR3 1066 - 533 MHz - 1066 MHz - 8533 MB/s - PC3-8500
DDR3 1333 - 667 MHz - 1333 MHz - 10666 MB/s - PC3-10600
DDR3 1600 - 800 MHz - 1600 MHz - 12800 MB/s - PC3-12800
DDR3 1800 - 900 MHz - 1800 MHz - 14400 MB/s - PC3-14400
DDR3 2000 - 1000 MHz - 2000 MHz - 16000 MB/s - PC3-16000
Effective Clock = Real Clock x 2
Maximum Theoretical Data Rate = Effective Clock x 8
Memory modules manufacturers usually name their mmodules according to the Effective Clock but some use the Maximum Theoretical Data Rate