Rambus (RMBS) - Eagle or Penguin Message Board

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Technology Stocks : Rambus (RMBS) - Eagle or Penguin

RMBS 87.54

-4.0%

2:07 PM EST

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To: Ian Anderson who wrote (48724)	8/2/2000 4:33:16 PM
From: Bilow	Read Replies (1) of 93625

Hi Ian Anderson; Most of your post can be rephrased as something like: "The DDR engineers didn't do a good job, while the Rambus engineers did." The tools that allow prediction of "reflected signals" have been widely available for quite some time now. Are you suggesting that the DDR engineers are somehow not using them? Cool that Rambus is so brilliant and the rest of the engineering world is so stupid. Funny that Intel is implementing DDR for servers. Funny that Intel, the brilliant company that chose the brilliant Rambus RDRAM design for its memory interface is now "considering" DDR for the mainstream P4 market. Funny facts, aren't they? The fact is that both these technologies can be made to work. The question is which is easier, which is cheaper. You wrote: "I would much rather design to read data from a 630ps rock steady window, than a 2.5ns window with 2.5ns jitter! I can be more confident that a design which works when I test it today will still work when the customer is looking at it tomorrow." but you didn't provide a single calculation or link. This is worse than the usual FUD. To believe this kind of tripe, you have to believe that a huge number of companies in the DDR consortium are bereft of engineering talent. Do you suppose that Rambus already hired all the 160 available decent engineers in the world? Get real. DDR has been simulated by engineers from a half dozen companies. Motherboards are out all over the place. Micron is selling the stuff over the internet. What will it take? Do you think that IBM would sign on to a technology that wasn't stable? Fact: The DDR people are gloating over the beauty of their waveforms. Take a look at these presentations: (Do these eye diagrams look like they've got "2.5ns of jitter"?) micronsemi.com Fact: Xilinx and Altera provide interfaces to DDR but not RDRAM. I suggest that this is due to those interfaces being easier to work with. Do you have an alternative suggestion? -- Carl

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