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

To: Ali Chen who wrote (39898)	4/14/2000 12:00:00 PM
From: Ian Anderson	Read Replies (2) \| Respond to of 93625

Ali Controlled impedance is the only way to get signal integrity and low EMI at high speeds. the *only* way It may not be the easiest to manufacture, it may not be the cheapest, but if it is done right it will work reliably I would never buy a PC133 or DDR system. Unless it is slugged to run slow, it will only work when the wind is behind it, or in exactly the configuration that the manufacturer tested and qualified. The margins are just too tight, there is too much variation in capacitive load on the memory controller dependent on the number of DIMMs fitted. Did you know that even to get PC100 to work with the BX chipsets the BIOS has to change the signal drive strengths according to what number and type of DIMMS are fitted. That's why the SPD issue is so important. The SPD is where the BIOS gets the information to calculate drive strengths. Rambus have designed something much cleaner, much more predictable. DDR is dead, dead, dead Ian