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

To: seotton who wrote (41601)	5/8/2000 3:53:00 AM
From: Bilow	Read Replies (1) \| Respond to of 93625

Hi seotton; Your story (re PC533 memory types) partially checks out. I went and checked the RDRAM specs to see if 533MHz was possible. It is, but I didn't find any references to it in a quick look at the Dell site. Such a slow RDRAM system would be very bad news, but I doubt that anybody is selling one. Until I see a real link, one showing somebody selling a system with 533MHz RDRAM, preferably referencing a 33% speed improvement over SDRAM, I will continue to think that suggestions of the existence of such a system is just FUD. Maybe someone mistook the CPU speed for the memory data rate. If someone finds me a link, I will share it with my engineering buddies, and we will laugh our heads off, it would be an exceptionally silly system. Spec note: Maximum Tcycle for 128Mb type Samsung RDRAM is 3.83ns. (True for all three speed grades, -600, -711, and -800.) That gives a BW/pin of 522MHz, so that 533MHz system is 11MHz within the legal minimum speed limit. At 533MHz, the overall bandwidth would be 1.066GB/sec. Compared to the 800MB/sec of PC100 SDRAM, this is indeed a 33% speed bandwidth improvement. Specs from Samsung data sheet, page 44: usa.samsungsemi.com If this is true, what a joke!!! I wish it were, but I have to see the link... -- Carl