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To: Scumbria who wrote (40190)	4/18/2000 4:15:00 AM
From: Tenchusatsu	Read Replies (1) \| Respond to of 93625

Scumbria, there are two things affecting DDR's efficiency: 1) Small number of banks per DIMM 2) Longer turnaround time between reads and writes (two data phases instead of one for normal SDRAM). The first factor affects the number of simultaneous accesses, while the second affects the efficiency of bandwidth utilization when switching from reads to writes, or from one bank to another. DDR-266 attempts to make up for the inefficiency by having a higher theoretical max bandwidth than RDRAM-800. It remains to be seen whether that is enough. I can guess, however, that DDR-200 will not be able to match up to RDRAM-800. Tenchusatsu