Hi all Im currently using a dual 2.7ghz PowerPC G5, 4gb 230gb hard drive, osx, 10.5.8. i was wondering on an upgrade possibility, and wanted some input. I am mostly using this mac for photoshop work and the odd video project, i was thinking of maybe upgrading to the new intel imacs or just upgrading this machine. What options do i have, if i was to upgrade this machine? from my research the most memory i could upgrade to is 8gb, how much of this increase, would this help to improve the performance of my computer? Or is it time to make the switch to the new intel platform, i really dont want to at the moment. any input would be much appreciated.