Installing additional ram on macbook

Hi everybody.
I've a MacBook with 2 gig of ram and now I want to upgrade them to 4 gig.
so I should replace each of them and take the new one.
the original ram currently is installed has 1066 FSB.
can I replace them with new one that has 1333 Mhz FSB?
is there any problem?
tank you very very much.

I would recommend sticking with memory modules that are specifically designed for your machine. Even if modules that are rated for a higher bus speed work, there is no benefit from using them as the machine will only use the bus speed it is designed for (i.e. it will scale down).

cwa107 said:

I would recommend sticking with memory modules that are specifically designed for your machine. Even if modules that are rated for a higher bus speed work, there is no benefit from using them as the machine will only use the bus speed it is designed for (i.e. it will scale down).

Click to expand...

how can I found which bus speed my machine is designed for?

linux_ocean said:

how can I found which bus speed my machine is designed for?

Click to expand...

Most decent companies that sell memory will point you to the exact modules you need.

I recommend:

RAM Memory Upgrade: Dell, Mac, Apple, HP, Compaq. USB drives, SSD at Crucial.com

...or...

Performance Upgrades; FireWire USB SATA Storage; Memory, more at OWC

Don't buy cheap, generic memory. It's not worth the hassles associated with it.