Hello everybody. I am posting this from an "aging" PowerMac (2 x G5@2.0GHz, 2GB DDR400, 80GB 7,200RPM HDD) which runs Leopard. I am well aware that this configuration was big several years ago but now I do realize its limitations (comparing with a Core 2 Duo Macbook Pro). Since this machine has a superb monitor, before asking for a replacement (which might not come soon), I'd like to give it a performance boost (if possible), the most logical choice being adding more RAM. So, here is a question for the experienced Mac users who might have run into a similar situation: would the performance boost given by adding an extra 2GB of RAM be truly noticeable? Or, is there anything I could do to boost the performance even further? (I am well aware it will never outperform a recent Mac). Thanks, Joe.