Chances are you will also need new RAM and a PSU. But that is impossible to tell without all your system specs. Please list all the specs.
Ram : Corsair Vengeance 16GB (2x8GB) DDR3 1600 MHz (PC3 12800) Desktop Memory (CMZ16GX3M2A1600C10)
PSU : Cooler Master Silent Pro Gold (SPG) 1200 Watts Modular Power Supply