Please forgive my ignorance but I need a little help.
I bought a new computer a little while back.  It has an AMD A6-3620 Quad core with on-board Radeon  HD graphics, to which I added a Radeon 6670 GPU.  
I know there is probably more information you need, but I would need direction to find it.
My problem is that I am pretty sure I am not getting what I should be from my hardware, and I am pretty sure it's because of my lack of knowledge.  
As an example, my frame rates are pretty low.  My detail is rather lacking also. 
If anyone could help me out, I would greatly appreciate it.