RAM speed. Important?

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I have an Aluminum PowerBook G4 15" 1.67 ghz. The RAM currently installed is:

SO DIMM, 200 PIN, PC2-4200, DDR2-533

My question is, I went on newegg.com to buy some more memory and all 200 PIN cards don't match my speed and the ones that match my speed aren't 200PIN. I know the 200 PIN is obviously important, but does the speed need to be PC2-4200 or can it be different?


Thanks in advance
 

chscag

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It's listing compatable memory upgrades for my model and the speeds are all PC2700. Not sure where the discrepency is. Also, this website is a little pricey, which is why I prefer newegg, but it doesn't matter I guess because newegg doesn't have what I need.
 
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It also says this:


Q: What memory goes into my computer, and will a faster speed be backward-compatible?

A: DDR memory with support for DDR PC2700 speeds.

Because DDR memory is backward-compatible, you can safely upgrade your system with any of the guaranteed-compatible DDR speeds listed below, even if your manual calls for PC1600 or PC2100 speeds.


I'm not sure if any of this is relevant because my speed is PC-4200.
 

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