I currently have a C2Q6700 running at 3.2ghz with an MSI GTX660 OC on an ASUS P5B deluxe MB. I am looking into updating the CPU and MB to an I5 4750K and Z87 MB and wondering what sort of FPS improvements I can expect with the upgrade and if it would be a worthwhile upgrade. I currently game at 1920 x 1080. I have searched various sites and keep finding conflicting info regarding possible improvements with the upgrade.