I am looking to upgrade my first gen 2.0ghz Aluminum 20" iMac with 1gb of RAM to 3gb, but I don't know if it is really noticeable. I currently use about 70-98% of my memory during normal tasks, and with 6 hours of usage since my last restart, I have used 1gb of Swap, have 150,000 page outs, and 300,000 page ins. I just can't stand waiting for my computer to respond. Will upgrading RAM help in that respect, and is 3gb good enough, or should I save a bit longer to get 4gb? I don't have $45 sitting around, but I do have about $30. I would like to use my current 1gb stock stick, but I have another iMac that could take it if I got 4gb.