MacOS – Macbook Pro Core 2 Duo won’t install 64-bit OS X 10.7

The first MacBook to fully support 4GB of RAM (with unofficial support for up to 6GB) was the MacBook (13-inch Late 2007). This was also the first MacBook to feature a 800MHz FSB and the GMA X3100 graphics chip.

I'd be interested to know where you're getting your system specs from, but I'd suspect that somewhere along the line the FSB and RAM speed are getting confused.

Check your system's specification from the System Profiler application found in /Applications/Utilities. Under the Hardware section look at the "Model Identifier".

If you get MacBook3,1 then you're in luck - that's the newer (Late 2007) model with greater RAM support and graphics. Anything prior to that (Macbook2,1 or MacBook1,1) and you're looking at (approx) 3GB limit or even 2GB (for the very first gen model).

Upgrading to Lion or Mountain Lion would not improve your Mac's performance. It may actually decrease performance as the newer versions of Mac OS X seem to require/want more RAM to run smoothly. Apple has increased the minimum amount of RAM in almost all of their line up to deal with this issue.

You currently only have 1GB of RAM... upgrading this would probably be the cheapest and most efficient method of speeding up your Mac. Freezing and unresponsiveness can be caused by lack of RAM.

Check out this Apple support article that will teach you how to use OS X's Activity Monitor to check whether RAM would improve performance.

After determining whether or not you need more RAM (you do!), you can find out what kind by following these steps:

1. Click the  in the Menu Bar
2. Click "About This Mac"
3. Click "More Info..." in the About This Mac dialog box

4. Click on the "Memory" tab

   • Listed will be what type of memory you have and how much. In the lower right hand corner is a link to "Memory Upgrade Instructions" — follow these instructions.