If using a mid tier AMD processor, you're already using 95w of it... I highly suggest you to upgrade the PSU, it's not expensive and some more power will be able to open up much more GPU possibilities. Anything about 400 ~ 600W would be tottaly fine.
If that's out of question, i'd suggest a GeForce GT 730. I had one and i could play any nowaday game with playable fps with medium or low settings