Well, I was curious, because the new MBP's Santa Rosa chipset has an 800MHz front-side bus - which means that technically, the PC2-5300 667MHz SDRAM is actually a bottleneck for the entire FSB.
My assumption is that Apple included PC2-5300 and stated that it was the only compatible type based on the limited availability of PC2-6400 SO-DIMMs. However, they
are available, albeit somewhat pricey (but still cheaper than buying PC2-5300 direct from Apple):
Crucial 2GB PC2-6400 SO-DIMM
EDIT: Well, finally found a
good reason why I was mistaken.
Quote:
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Originally Posted by MacInTouch Santa Rosa MBP review
There has been some confusion about the MacBook Pro's 667-MHz memory speed vs. the 800-MHz frontside bus. Although 800-MHz memory is available in the marketplace, Santa Rosa doesn't support it. 667-MHz memory, we are told, is effectively 33% faster than Santa Rosa can use, so the lack of 800-MHz memory should not handicap this computer.
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Crucial 4GB kit it is, then.
