Feb / 22

Can I have 2 graphics cards in my hp pavilion h8-1214 at the same time?

                        I just bought a hp pavilion h8-1214 from bestbuy and the graphics card just is not cutting it for world of Warcraft on high-ultra settings. I just would like to know if I can add a card with low power usage to take the weight off the radon HD7450 so I don't need to upgrade the 300W PSU aswell, or if I need to upgrade PSU and get a 2gb dedicated graphics card.