the fx 8320E is stronger than the i3, but i don't recommend it. If you're sticking around the price of a fx 8320E set, and you don't mind a locked chip, just go with an i5 4460 and a h97 motherboard. Parts together should be similar to the 8320E and whatever board you were planning probably...
Honestly.. There's nothing wrong with an AMD CPU in my opinion. Of course if you're planning on going big on the GPU the AMD cpu will bottleneck slightly, but not enough to ruin the experience i'd say...