My post mentioned the 210 chipset radeon card as the only one that might run with your power supply. 220w is the max under load. Almost any one you choose will be an improvement. Good brands: antec, corsair, seasonic, enermax, and some ocz models which I use. If you have a standard desktop case, any atx ps should fit; if it's the slim model, you may need a micro atx model. Newegg has good specs for most whether you get it there or somewhere else.