GPU is what gives you FPS. 😉
I think that it won't run at all, get NVIDIA GTX 750/750Ti and it will work flawlessly.
If you can, my advice is to get a GPU.
Anyways, here is the FPS:
Low settings, 1024x768 = 46.2 FPS
Medium settings, 1366x768 = 34.7 FPS
High settings, 1366x769 = 22.5 FPS