I recently picked up a 1GHz iMac G4 for 50$. I have to say this thing awesome, probably one of the best looking macs ever in my opinion. Anyhow, it had 512mb of ram originally and 10.3.9 installed. I upgraded it to 768mb, not great but it wouldn't accept any 1GB DDR stick I had, it just wouldn't recognize it. So 768mb it is until I can order known compatible ram. I installed leopard, updated to 10.5.8 which runs okay. I know it would be better with at least 1gb. I keep having weird issues with the graphics, geforce4 MX 64mb. If I have a folder in the dock it does not display properly, see the attachment. The dock is slow in general but I assume thats because its only got 768mb. The other graphics issue that caught my eye is that it does not handle games well. And I'm referring to games that shouldn't even use the GPU in this thing, such as age of empires 2, star wars galactic battlegrounds, or starcraft. Images look fine, but they are all very choppy. All of the movement is slow and choppy. I have a 400MHz iMac G3 set up directly next to this thing and it handles all of the games listed above perfectly and very smooth, as it should be. Its running 10.4.11, and the games are native OS X apps, not classic. My normal thought for this type of issue is drivers, but being as its an old PPC mac, I don't think there are any nvidia drivers available other than what is included in the OS.