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To: Elmer who wrote (104073)6/6/2000 11:37:00 AM
From: Tony Viola  Respond to of 186894
 
Elmer, good points: The big deal is pincount. Assuming RamBus worked and was available you can get high bandwidth with about 1/4 the pins needed for an SDRAM type interface plus all the other associated issues like added power and ground pins, simultaneous switching problems etc that go with SDRAM...

Another good point: Of course all this is moot if you can't buy RamBus memory or it just plain doesn't work.

How about this, though? With the huge # of bits those DRAM vendors are cramming into those chips nowadays, it doesn't take many of them to populate a reasonable memory size, so I/O pincount isn't that major of a deal. Then again, W2K, other new SW always take more and more main memory.

Look at Alpha's 21364 design

Alpha and products it's used in are much lower quantity, command higher price, and therefore can afford more exotic, expensive memory technology. Then again, it has to work for them, too.

Tony