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To: Scumbria who wrote (104139)	6/7/2000 5:05:00 PM
From: GVTucker	Read Replies (1) \| Respond to of 186894

RE: High pincount I can understand that a higher pincount would indeed increase costs, but in the array of things affecting the marginal cost of a chip, wouldn't pincount be way down on the list? It would appear to my uneducated eye that moving to 0.13 micron could pay for a whole bunch of pins.

To: Scumbria who wrote (104139)	6/7/2000 5:34:00 PM
From: Tenchusatsu	Read Replies (2) \| Respond to of 186894

Scumbria, <According to Bilow on the Rambus thread, DRDRAM uses more pins than SDRAM. This is because of additional wires required per data line, to enhance signal integrity.> Yes, RDRAM needs additional lines to enhance signal integrity at high clock speeds. Yet the pin count is still lower because RDRAM's data path is 1/4 that of SDRAM's, and that more than offsets the additional pins necessary for signal integrity. By the way, Bilow Carl says a lot of things on the RMBS thread. He likes to distort things just a little in order to make "dead dead dead" a self-fulfilling prophecy for Rambus. (It's not like such tricks are necessary, either, considering the current state of Rambus.) Tenchusatsu

To: Scumbria who wrote (104139)	6/7/2000 5:49:00 PM
From: Elmer	Read Replies (2) \| Respond to of 186894

Re: "According to Bilow on the Rambus thread, DRDRAM uses more pins than SDRAM. This is because of additional wires required per data line, to enhance signal integrity" This is incorrect. RMBS uses about 1/4 the pins on the package that an SDRAM controller would. The RMBS bus itself uses differential pairs but that's only 16 bits plus the clocks and it's transaction based. I don't remember the exact pincount and I don't have a document here where I am. If it weren't a major pincount reduction there'd be no reason for it AFAIK. EP