If you have $100 now then just wait until you have $150-160...you can afford about 200 percent more performance going from the lowest end offerings to the 750ti which is solid middle class. It is just as fast as the 660ti boost when overclocked for 50 less and uses just 75 watts. I suggest you wait until you can afford that. Like I said earlier it does 1080p gaming very well.
Asus GTX 750 Ti OC 2GB Review | KitGuru - Part 18
33fps in bf4 at ultra settings ain't nothing to sneeze at
Sent from my Nexus 5