Hi guys, I recently picked up an old, mostly incomplete G5 tower that was going for free. I haven't bought a Mac since my old G4 back in the early 2000's and I'd like to restore this old machine for nostalgia sakes. As mentioned it's fairly incomplete; it's missing a hard drive, all memory, any video card, and it's optical drive - and as such, the only thing I have to identify the machine is a motherboard code (820-1592-A). I'd be really happy if someone could drop me a few details about the model of machine this is and what memory I should purchase. It would also be nice to know my options for video cards and the compatibility of modern SATA hard drives on the machine too. Many thanks in advance.