I currently have 6.5gb of RAM in my power mac g5 - all 1gb stick besides two 256 sticks. The computer is doing fine and I'm thinking about using it for another year or so. My question, do you think it worth maxing out the RAM to at 8gb? When I first bought the machine I was heavily into photoshop, but this isn't the case anymore - just a casual user now. I guess what I'm trying to figure out is, would adding more RAM (8gb opposed to 6.5gb) prolong the life of my machine?