New PC not strong enough for the game?

[Skyl1n3]

Your GPU isn't too bad but your CPU is holding you back, but as it's an FM1 socket motherboard you're limited to what you can upgrade to without changing the board itself.

I suggest upgrading to an HD 7870 and changing your Mobo and CPU to lift the bottlenecks, even a cheap M5A97 and an FX-6300 will be a massive improvement over what you're currently using.