Okay, you might wanna think about getting another PSU. I say that because dual rail PSU's are of the worst design for gaming rigs.
1 of your 12v rails is entirely wasted on the CPU, this leaves you with a meager 18amps for your video card and the rest of the system. Try to get a nice single 12v rail PSU such as this one-
With a nice single 12v rail you dont have to worry about splitting the load and wasting an entire rail on the CPU, instead with a single 12v rail psu all the power goes to the components that need it the most.