I have an old desktop, with a 300W PSU. My old graphics card died (8400GS), and I am forced to use only very light Linux systems. It is 64 bit and I have 6GB RAM installed. CPU is Athlon 64 X2 6000+. I have done some calculating, and I think I might get away with running a GT 630 card. But I don't want to spend much, as the computer is from 2009 and could die any time. I see used and refurbished cards for sale. For example, PC Liquidators had the GT 630 for$ 27.00. Should I try it, or is just not worth it?