I always found Photoshop slow on any G4 laptop I ownded, regardless of RAM. Moving up to my current G5 iMac made all the difference in the world. I'm very happy with the large brushes/textures I use in Photoshop, and ArtRage just flies on this machine. Simply flies. I work at those sizes too. Once they make ArtRage a Universal Binary for the core duo Intel Mac Apple laptops, I think it'll scream, even if Apple puts out a low end core duo iBook replacement at 1.66GHz. Upgrade then??
DaveyJJ --> artspin.com | widgetmonkeys.com | 729design.com
"Inside each one of us is an artist ... a child who has never lost the gift of looking at life with curiousity and wonder." Arthur Lismer