A quick search seems to indicate it'll support up to the FX-8xxx series CPUs.
Could be something to be gained if you could pick up a faster CPU. Not sure if more cores will help, but the FX-4100 is 4 core, 3.6GHz
FX-4170 and FX-4350 are 4 core, 4.2GHz, which can help some. A 17% boost in clock rate.
FX-8350 is 8 core, 4.0GHz... maybe the extra cores help more in some instances despite slightly less clock speed, and I suppose it's more optimized in performance per MHz.
It also supports Phenom II chips, but again, I'm not familiar with their performance characteristics compared to the FX series.
Going by the hierarchy charts, the 4170 is only one tier higher in gaming performance, the 4350 is 2 tiers higher, and the 8350 is 3 tiers higher.
Maybe your existing CPU can be overclocked, but I'm not really familiar with AMD's CPUs.
Are you looking to use it as a gaming computer, or other purposes?
I stumbled across a note that says the board will support CPUs up to 140W.
I suppose even an upgrade of the GPU, if you also upgrade the CPU, will make some difference as well.
It's a matter of weighing what you want to use it for, versus how much you're willing to spend on upgrades. But, if you can pick up a faster CPU for it cheap or free, why not give it a shot?
Then, possible GPU upgrades. But there's only so far you can go with this system.
EDIT: in other words, what Kyle said, but he's way more concise than I. :lol: