Can the MacBook Pro 13inch mid 2008 use 1333Mhz RAM?

Question

Can the MacBook Pro 13inch mid 2008 use 1333Mhz RAM? I just bought another 4 GB of ram, but it isn't 1066Mhz like the other stick. Everything works and passes a memory test but the MacBook does not wake from sleep. It only does this when the new RAM is inserted. I have tried it on its own and with the old memory and it only does it with this faster memory installed. It says its at the same speed as any slower RAM installed.

Answer 1

So 1066Mhz is the only ram that works.? As in there isn't anything I need to change or the ram just isn't working correctly? I was always under the impression that ram always clocked it self down to the slowest module installed, which this one does, it just does let the Mac come out of sleep..
There may be some 1333MHz RAM that would work in your machine, but it's not what you bought, and the only way to find it would be to keep buying more and more modules until you found one that worked.  It is always safest to buy RAM with the right specs for your machine from a known-reliable, Mac-savvy vendor that offers a lifetime warranty and no "restocking fee" if you get a module that seems to be bad or go bad.
RAM that is faster than spec will often clock itself down, not to the speed of the slowest module installed, but to the speed the machine's architecture is designed to use. But it doesn't always work — not even when it appears at first to work. And there's never any benefit to installing faster-than-spec RAM, because it never speeds up the machine's operation at all.