Before revision: Some examples of popular designations of DDR modules: Names Memory clock I/O bus clock Bus width Transfer rate Theoretical bandwidth DDR-200, PC-1600 100 MHz 100 MHz 16-bit 200 MT/s 1.6 GB/s DDR-400, PC-3200 200 MHz 200 MHz 400 MT/s 3.2 GB/s DDR2-800, PC2-6400 200 MHz 400 MHz 800 MT/s 6.4 GB/s DDR3-1600, PC3-12800 200 MHz 800 MHz 1600 MT/s 12.8 GB/sDDR4-2400, PC4-19200 300 MHz 1200 MHz 2400 MT/s 19.2 GB/s DDR4-3200, PC4-25600 400 MHz 1600 MHz 3200 MT/s 25.6 GB/s DDR SDRAM uses double-data-rate signalling only on the data lines.
After revision: Some examples of popular designations of DDR modules: Names Memory clock I/O bus clock Transfer rate Theoretical bandwidth DDR-200, PC-1600 100 MHz 100 MHz 200 MT/s 1.6 GB/s DDR-400, PC-3200 200 MHz 200 MHz 400 MT/s 3.2 GB/s DDR2-800, PC2-6400 200 MHz 400 MHz 800 MT/s 6.4 GB/s DDR3-1600, PC3-12800 200 MHz 800 MHz 1600 MT/s 12.8 GB/sDDR4-2400, PC4-19200 300 MHz 1200 MHz 2400 MT/s 19.2 GB/s DDR4-3200, PC4-25600 400 MHz 1600 MHz 3200 MT/s 25.6 GB/s DDR SDRAM uses double-data-rate signalling only on the data lines.