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To: JH who wrote (33575)11/2/1999 4:42:00 AM
From: Bilow  Respond to of 93625
 
Hi John C. Hsu; I would think that the Memory Expansion Module would allow expansion of an 820, but I do not know for sure.

The problem with the expansion module is that it costs money, and decreases performance (i.e. latency).

I'll go take a quick look...

-- Carl



To: JH who wrote (33575)11/2/1999 4:57:00 AM
From: unclewest  Read Replies (1) | Respond to of 93625
 
gateway.com



To: JH who wrote (33575)11/2/1999 8:59:00 AM
From: Dan3  Respond to of 93625
 
Re: can't the 820 also support the Memory Expansion Module?

I think you meant the repeater hub - that allows sets of rambus chips or modules to be daisy chained.

Take a look at:
eetimes.com
Where the originally expected configurations for rambus systems are discussed. There is some discussion of the repeater hubs that I think that you meant to suggest using.

There has been speculation that this configuration results in the same kinds of problems that have (apparently) limited the 820 and 840 to 2 RIMMs per channel. It was after the rumors about the repeater introducing such errors appeared that the server manufacturers all announced they were going with DDR and Intel announced they'd develop DDR chipsets as well as Rambus and PCXXX.

These events could be unrelated, but working repeaters would be mandatory for a server using rambus due to the amount of memory servers need to support.

Regards,

Dan