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Technology Stocks : Rambus (RMBS) - Eagle or Penguin -- Ignore unavailable to you. Want to Upgrade?

To: blake_paterson who wrote (46060)	6/26/2000 9:25:00 AM
From: blake_paterson	Read Replies (2) \| Respond to of 93625

A pro-RMBS (?biased) latency test: dramreview.com For years the "common wisdom" has been that RDRAM suffers substantially worse latency than SDRAM. Occasionally a theoretical analysis appears which purports to settle the issue, but no two analysis have ever seemed to agree. We decided to tackle the question head-on. Regardless of what theory might say, you can't argue with facts. This week we examine the measured latency of two systems, one with RDRAM and the other with PC133. Take a look at what we found out. Since modeling no longer seems to be sufficient to predict the behavior of memory systems, what remains is the tried and true method of actual measurement. The actual latency of a PC133 CL2 SDRAM platform was measured and compared it with the latency of a PC800 RDRAM platform. The measurements were made while running the stream benchmark, a well understood benchmark which also met our needs of running for a long period of time while generating enough memory traffic to provide interesting results. Details of the system configurations and measurement methodology can be found here. Latency was measured at the pins of the processor front-side bus (FSB). The elapsed time for every memory read transaction was measured, from the time the processor placed the request onto the FSB until the processor sampled the first data returned. Surprisingly, the results contradict "common wisdom" and show that the average latency of the RDRAM system is 173 ns, 6% better than the average latency of the SDRAM system at 185 ns