880G chipset is excellent with its integrated Radeon HD4250. As long as you don't want to take advantage of GPU acceleration, I say scrap the GPU
On a side note, do you need this rig now
and is there a possibility of you increasing your budget? With the FX-8320 being around ~$160, it's a great rendering CPU for the cost. If you overclock it moderately, it'll be one heck of a performer as well.
You can't beat 8 threads munching on data http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/57446-fx-8350-cpu-review-amds-vishera-arrives-21.html