burns_brock :
and the apu would be able to run the GTX750Ti fine?
Yes.
With some explanation:
An APU is a CPU + GPU combined together. Unless you use an HD6670 dedicated card (or whichever is supported) in Dual Graphics (almost identical to Crossfire) you then use only the CPU portion.
The CPU part isn't too bad however it's not as good as say an i5-4670K. Thus you will have BOTTLENECKING in some games that are more dependant on the CPU.
I don't have the exact numbers but I do know some games are more GPU-bottlenecked and that CPU (of the APU) can be sufficient to NOT be a bottleneck.
Thus my recommendation is to get the best graphics card in your budget such as an Asus GTX750Ti. I'm not saying it's the best card for you, it's just an example.
Your POWER SUPPLY must also have the proper 6/8-pin PCIe connectors.