How much RAM? Which RAM? - Differences of Opinion

I agree with 'Jon' that Crucial.com is a very informative site for establishing compatible memory.
My question is this: According to Crucial my max memory should be 640MB. Yet according to the Kingston Technologies website, I can buy 1GB to go to a max of 1.2 GB for the same machine.
Also the 'Kingston' chip has PC2700 option (higher speed DDR) than the PC2100 'Crucial' version. Does this aspect actually matter much?
Can this apparent discepancy be clarified or wise advice offered?
Many thanks
Gordon

Hi Gordon,
My question is this: According to Crucial my max memory should be 640MB. Yet according to the Kingston Technologies website, I can buy 1GB to go to a max of 1.2 GB for the same machine.
The discrepancy lies in the fact that at the time, 1GB SODIMMs either weren't commercially available or far from mainstream. To illustrate, I remember when I had my 867MHz 12" PowerBook, there was a line in the user manual which said that 1GB modules would be supported once they were available. I believe this continued to appear in subsequent revisions until 1GB modules were actually available.
Also the 'Kingston' chip has PC2700 option (higher speed DDR) than the PC2100 'Crucial' version. Does this aspect actually matter much?
Generally speaking, it wouldn't matter. The speed rating, e.g. PC2700 DDR333, tells you how fast the module is rated to clock up to - it shouldn't have any problems clocking slower, e.g. at 133MHz (or 'PC2100 DDR266'-rate).
Yang

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