If you don't buy those components yet, I recommend to buy the FX4300 + Gigabyte GA-78LMT-USB3 or ASUS M5A78L-M/USB3 AM3+ , they are the same 760 chipset, but the GA or ASUS has better VRMs (4+1), the ECS may has only 3+1, because more VRM will run the cpu more stable, and better oc capability. Also the fx4300 is newer cpu too and it should be same price to the fx4100.
But if you already buy the MB, and it is not good for ocing. If you can return it then change to other MB.
If you don't buy those components yet, I recommend to buy the FX4300 + Gigabyte GA-78LMT-USB3 or ASUS M5A78L-M/USB3 AM3+ , they are the same 760 chipset, but the GA or ASUS has better VRMs (4+1), the ECS may has only 3+1, because more VRM will run the cpu more stable, and better oc capability. Also the fx4300 is newer cpu too and it should be same price to the fx4100.
But if you already buy the MB, and it is not good for ocing. If you can return it then change to other MB.