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To: Ian Anderson who wrote (25934)	7/29/1999 10:56:00 AM
From: Scumbria	Respond to of 93625

Ian, All DRAM types use the same core memory, so the fundamental properties are the same. The only real differences affecting raw latencies are timing synchronizations between clocks. Because DRDRAM has a faster clock, there are some possibilities to synchronize faster. Fundamentally, the raw latencies are not going to vary much from one type DRAM to another. The more complicated latency issues relate to specific policies of the memory controller, the number of open banks, and the address patterns being generated by the application and CPU. This is a topic of great complexity, which goes well beyond the scope of this forum. Bus turnaround is the delay going from a read to a write, or vice-versa. Given that there really isn't much difference in latency between DRAM types (they are all very slow), it makes sense to use the lowest cost solution on a motherboard. This does not apply for bandwidth limited applications like graphics cards however. Scumbria