MacBook Pro 3,1 RAM question

I'd like to update the RAM in my MacBookPro3,1. Do I need to purchase a matching pair or can I purchase a 2GB and a 4GB? Also, where is a good place to order online for RAM for this MacBook Pro?
Thanks so much,
Shenley

You can use either a matching pair or both a 2GB and a 4GB module; buy them from a source such as OWC or Crucial.
If you install 8GB in it and more than 4GB is in use, the computer will slow down to the point that it's unusable.
(108281)

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