Agreed The 7750 has a very low power consumption and does not require a 6 pin connector. Most 300 watt power supplies will be able to handle it. If you are comfortable with changing a power supply. There a pretty cheap upgrade alternatives so you can buy a better card. a Corsair CX430 is like 30-40 dollars. And you could run a much more powerful card off it.
Thank you. You guys are very helpful. Truthfully, I'm just trying to get some slight gaming in while I save up money for a better overall PC. I guess I'll just crossfire the 7750 when I have a better PC.