Recently, I purchased PowerMac G5 first model (1.6GHz) with additional 2GB of RAM. Did some research, did not find the right answer. I formatted the harddisk and install Leopard 10.5 and update it to the most recent updates available (10.5.8). Installed VLC for PowerPCs. The video playback is choppy and sluggish. The audio seemed to have better playback, but not sure how smooth it is. Tested them with 1080 vid taken from Canon 550D (.mov not sure about the codec) and 1080 movies (.mkv) downloaded from torrents. My question is that my G5 has the horsepower to playback FULL HD movies? I know that VLC for PowerPC is outdated. Just want to know is it the hardware incompatibility to HD vid or software is not supported. Or is there a way to play 1080 movies smoothly on PowerMac G5?