Having just upgraded from my now dead G4 to a friends early G5 (2.0 GHZ), other than maxing out the ram to 8GB and using a seperate disk for the scratch disk in Photoshop, can I expect to see any significant increase in speed or image quality while processing raw files with an upgraded graphics card (Radeon 9800PRO or X800 XT w/256 MB)? This is only for Photoshop, not video or gaming. Running CS4, current graphics card is a GeForce 5200 Ultra w/64MB of ram.