2.2, 2.4, 2.5, or 2.6 GHz Core 2 Duo processor

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upgrading RAM from 4GB to 8GB

Mac Laptop a late 2008 15" macbook pro

my mistake was assuming I could just add a 4 GB chip to my memory and so I ordered only one ( you sent me a PC3-8500 4 GB )……I'm starting to thing that I might have to have another before I begin. Right?

Do I need to install 2 new 4GB chips to upgrade my laptop to 8GB RAM

or can I just add a new 4GB chip to the original 4GB?

Answered! View the answer I have this problem too

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Standard RAM: 2 GB Maximum RAM: 6 GB*

Details: 2 GB installed as two 1 GB modules. No slots free.

*Apple officially supports a maximum of 4 GB of RAM but third-parties have been able to upgrade the system to 6 GB of RAM using one 2 GB and one 4 GB memory module.


RAM Type: PC2-5300 DDR2 Min. RAM Speed: 667 MHz

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Cameron Webb will be eternally grateful.
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