Sorry to say, your systems out of date. Your CPU is a 2nd Gen Quad core that Intel lists as "End of Life", and you have half the recommended minimum RAM. Your GPU is dated, but possibly servicable if put into a newer computer, though I would suggest getting a new one because that one will never keep up with the newer bits of TANE that set it apart from TS12.
Hate to be the bearer of that news, but there ya go. Theres lots of things you can do to upgrade or get a new computer, and we can talk about that if you want, but the actual purchasing will have to be done by you.
Good Luck,
Falcus