Hello, my sister got an old prebuild PC from her job(Thinkcentre from lenovo). It has a I5 650, a Lenovo motherboard with 4 DDR3 ports, a 250 gb HDD, a DVD, and that's all. So I was thinking about doing something with It like making it a worth pc for light gaming, or an HTPC. What do you think would be a good use of this PC?