Any change in CPU these days is going to only get you a minimal increase in framerate. A good GPU is what is used to power (most) games. If you are getting dedicated graphics, cut out the A10. The i3 appears to be the best performer otherwise. (sorry, only bench available was the FX 6300, but the i3 is still better)
Workstation- Antec Sonata Solo II, Corsair 650TX, i7 3770K, NVidia GTX 670, 16GB DDR3 1600Mhz, 180GB Intel 330 SSD, 8TB WD Reds.
Gaming Build - Antec 300, Corsair 650TX, i5 760, Gigabyte GTX 660Ti, 8GB DDR3 1333, Samsung 120GB 840, 3 x 1TB Samsung F3.