Just how much do you have to spend?
I have a feeling you're going to have a bit of bottleneck between CPU and GPU if you try to upgrade the GPU, but if you upgrade the CPU, you likely won't see that big of a boost in gaming performance.
I have a couple hundred dollars i could use, or I could just use the build as it is and put that money towards some other projects I have.
I really don't want to upgrade motherboards, and the only real alternative to the 4300 without spending big bucks would be like a 6300 or something, which I have heard doesn't really add much performance as far as gaming is concerned.
That being said I would like to get a faster GPU just because I'd like to max out a few more games. Don't get me wrong, the 270 is a great card, especially for the price, but I feel like if I could sell it to a friend of mine and put that towards a faster card (possibly another AMD card, since GTA V is rumored to have Mantle support). I was looking at the Gigabyte R9 280, which has a number of superior stats compared to my 270, but of course it is about 40 dollars more expensive for something that might not even give that much of a performance boost.
SO from the looks of it i can't really do much justifiably without dropping a lot of cash, so unless someone has some magic they can work up I guess my build is gonna stay the same.