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Speed Comparison: DDR400 Vs. DDR333 Vs. DDR266, Continued

Unstoppable: DDR400 vs. Rambus
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The SiSoft Sandra 2002 Pro Memory Benchmark shows the exact bandwidth of the various memory modules. However, we cannot vouch for these figures in practice.

Equal Bandwidths: DDR400 And RDRAM (PC800)

Label Name Effective Clock Rate Data Bus Bandwidth
PC66 SDRAM 66 MHz 64 Bit 0,5 GB/s
PC100 SDRAM 100 MHz 64 Bit 0,8 GB/s
PC133 SDRAM 133 MHz 64 Bit 1,06 GB/s
PC1600 DDR200 100 MHz 64 Bit 1,6 GB/s
PC1600 DDR200 Dual 100 MHz 2 x 64 Bit 3,2 GB/s
PC2100 DDR266 133 MHz 64 Bit 2,1 GB/s
PC2100 DDR266 Dual 133 MHz 2 x 64 Bit 4,2 GB/s
PC2700 DDR333 166 MHz 64 Bit 2,7 GB/s
PC2700 DDR333 Dual 166 MHz 2 x 64 Bit 5,4 GB/s
PC3200 DDR400 200 MHz 64 Bit 3,2 GB/s
PC3200 DDR400 Dual 200 MHz 2 x 64 Bit 6,4 GB/s
PC4200 DDR533 266 MHz 64 Bit 4,2 GB/s
PC4200 DDR533 Dual 266 MHz 2 x 64 Bit 8,4 GB/s
PC800 RDRAM Dual 400 MHz 2 x 16 Bit 3,2 GB/s
PC1066 RDRAM Dual 533 MHz 2 x 16 Bit 4,2 GB/s
PC1200 RDRAM Dual 600 MHz 2 x 16 Bit 4,8 GB/s
PC800 RDRAM Dual 400 MHz 2 x 32 Bit 6,4 GB/s
PC1066 RDRAM Dual 533 MHz 2 x 32 Bit 8,4 GB/s
PC1200 RDRAM Dual 600 MHz 2 x 32 Bit 9,6 GB/s

The table above lists the theoretically possible bandwidths of the individual memory modules.

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