Do I need to upgrade?

Alright, I am pretty much a super noob here, so please bear with me. I would like to see what I can do to up the frame rate on some of the newer games coming out. I'm not sure if I need a hardware upgrade (or what to upgrade) or if I simply need to tweak some settings here or there. Here are my specs as well as I know them;

MB: Gigabyte GA-78LMT-USB3
AMD FX 4100 3.6 GHz Quad Core
AMD Radeon HD 7700 series
8Gb DDR3 RAM

Anyone have any advice? Would be much appreciated.