I think you should get a better upgrade than that. Unless you can trade in your 7770 for the 650 somehow, it's not really worth it for you to purchase another graphics card that does a bit better than your current one. If I were deciding between the 7770 and the 650 in a rig, I would choose the 650. However, if I had a rig that already had a 7770 I would save up for something nicer