So I have inherited a G5, but beyond that I am lost. I do not know what speed of processor is in it, or even how much RAM it has in it yet. How can I find out? Does apple have a serial number look up that would tell me the original build? My question is though, what are the options in 2013 for an OS for the thing? I doubt if I could just call up Apple and get an old Leopard disc. I have the original disc from my 2008 MBP but I believe someone told me that wouldn't work because it doesn't have drivers fro the G5 or something? I looked into Linux, quickly found a lot of outdated information and frustrating broken links. The Linux forums suggested Debian, which I attempted to get, but the Jigdo link for Mac OS was broken and they want $42 just for the pre-made CD/DVD's. Any one have any ideas? I want to use this for a file server for my house. The most intensive thing it would be serving would be videos. Is there still a way to buy an OS install disc from Apple? Any help or suggestions would be greatly appreciated! P.s. - It is the silver aluminum tower, I actually received two, but one won't even turn on, doesn't even chime at the start.