Rambus (RMBS) - Eagle or Penguin Message Board

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Technology Stocks : Rambus (RMBS) - Eagle or Penguin

RMBS 94.23

-11.1%

Dec 12 9:30 AM EST

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To: Bilow who wrote (32968)	10/26/1999 10:50:00 PM
From: Tenchusatsu	Read Replies (2) of 93625

Carl, the number of signal pins on a Rambus channel is actually one half of what you stated. The document you posted from www.rambus.com is actually a RIMM spec sheet. And as you know, a RIMM has signal pins going in and signal pins coming out. Therefore, there are actually 37 signal pins on a Rambus channel, not 74 as you might think. So to redo your calculations: The bandwidth per signal pin on the DDR module is 2.128GB/sec / 125 = 17MB/sec/pin. The bandwidth per signal pin on the Rambus module is 1.6GB/sec / 37 = 43MB/sec/pin. Seems like Rambus is pushing a lot more bandwidth per signal pin than DDR SDRAM. This doesn't translate into pin savings on the RIMM because of the two-ended channel, but it does translate into pin savings on the memory controller. Tenchusatsu

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