It's always be fine to have higher speed or better than the spec parts. Not much has happened to change that advice for close to a few centuries now.
There are some other dozen parameters such as page sizes and such but speed is an easy one.
Bob
I have a
1.33 GHz
12-inch
512 RAM
(A1133) iBook
which is supposed to use
<span id="INSERTION_MARKER">PC-2100 DDR 266 200-pin SO-DIMM RAM modules.
<span id="INSERTION_MARKER">
<span id="INSERTION_MARKER">I have found out that it can also take PC-2700 333 (running at 266),
<span id="INSERTION_MARKER">
<span id="INSERTION_MARKER">but I have been offered a module that runs at 400. Does anybody know whether it would work / damage the laptop if used?
<span id="INSERTION_MARKER">
<span id="INSERTION_MARKER">Thanks (I am not an expert in this field at all)

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