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Usually depends on the operating system, but in a nutshell, yes. Your system will probably be a little bit snappier with an extra gig if all you're doing is web browsing and e-mail. If you do more intensive work than that, the system will take more advantage of that extra gig and you'll notice more improvement.
 
It depends on what you are doing and if you are maxing out your current ram, but probably more ram will make your computer run faster.
 
thanks I am going to use Adobe Photoshop element final cut express and toast titanium. I guess it helps better anyway that is for learning purpose before I upgrade to MBP

oh by the way I am running Leopard 10.5.8
 
thanks I am going to use Adobe Photoshop element final cut express and toast titanium. I guess it helps better anyway that is for learning purpose before I upgrade to MBP

oh by the way I am running Leopard 10.5.8

For those things, 2GB will help. It will still be slow, since it's running on an old computer, but it will be better with more ram.
 
Always pay attention to the Activity Monitor and how much Page Outs you have.

If you have something like that (Leopard) then you are in trouble and additional RAM will improve things:

ActivityMonitor-PageOuts.gif


Be sure that Page Outs number is not higher than 1 GB.
 
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