I have an old SFF pc lying around, not sure of the exact model though it's an Intel i3 2120 CPU I believe, would this be any good to use as a NAS if I configured it correctly and threw in a couple of 2TB HDD's? would mainly be used to backup my PC and if possible as a media server, I have 4GB DDR3 spare and would be using the Intel HD iGPU, not sure if this would be enough for video streaming however? it should have onboard gigabit LAN so transfer speeds shouldn't be an issue, just want to know if it would be a good system to use in this way or a waste of energy compared to other options, of which I don't have many due to not having any funds to dedicate to this apart from the drives though it is something I would like to do either now, or when I am able to afford something better.