I have an iMac G4 1GHz with 512MB of memory. When I purchased it used, it was running 10.3.8, then, I upgraded two months ago to 10.4.11. Now, this is my only computer at this moment, and the next computer I will purchase will be an iBook G3. I heard 10.5.8 can run the latest version of Safari (v5) and even older versions of Google Chrome, which is my favorite browser. Should I first upgrade to 1 or 2GB of memory before I install Leopard? Because I'm impatient and I like fast computers.