the chipset yuo are looking at (the 760G) is limited to 95W processors - so only the 8320 will work (and no overclocking, even for a 4300), and was originally a chipset for AM2+ processors which has been upgraded through the AM3+ units. It really shouldn't be used for FX series chipset, if only because of th very slow hyper transport on board; It was reasonably quick for 2007/08, but will bottleneck Vishera chips.
ti get the most out on an FX chip, use a 970, 990X, or 990FX motherboard