I have a 2.16GHz Intel C2D iMac (white, not aluminum). I currently have it set-up with 2GB of RAM, 1x1. I'm looking to upgrade the RAM once again, to max it out. Accordingly, the computer can run up to 3GB of RAM, and if using 4GB, it won't actually use more than 300MB past the 3GB mark so it's kinda pointless. This is all info I read. Correct me if wrong. I want to know if upgrading from the 2GB to the 3GB would have a noticeable difference, or at least less of a waiting time between things. I use Photoshop, which is actually pretty fast with my current set-up and sometimes use VMWare. Those are the two most RAM-hog programs I can think of, but I'm pretty typical outside of that. The 2GB stick of RAM is only $20, and then I'll just keep one of the 1GB sticks that's currently on my iMac, so it's not a big expense or anything. If it's not gonna make a difference though, then I won't even do it. Let me know. And sorry about another one of these threads.