Have you installed the latest drivers for your GPU?
As for a CPU upgrade, you might be able to go up to an i7-2860QM. However, to get more bang for your buck, look into a new Haswell desktop, with an i5 4670k or i7 4770k (only benefits of the i7 is hyper threading)
As for a CPU upgrade, you might be able to go up to an i7-2860QM. However, to get more bang for your buck, look into a new Haswell desktop, with an i5 4670k or i7 4770k (only benefits of the i7 is hyper threading)

