Thanks for the feedback. I am sure that you have noticed the performance improvement.

If you were reasonably happy with 256Mb of RAM, it does not sound as if increasing the 512Mb that you now have would be that much of a benefit. I certainly wouldn't go above 1024MB as I very much doubt if you would use it.

Theres days I build with 1024Mb unless the user is heavily into CAD or image manipulation/photo editing.

Maybe the next thing to look at is the video card?

Remember that balance is the secret