What kind of Power Supply will I need?

JacobDG0821

Honorable
Aug 1, 2013
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I'm going to overclock to 4.5Ghz for the CPU.For the GPU I'm going to overclock either 1075Ghz or 1100Mhz,And I'm going to use Liquid Cooling.

For the CPU i'm going to use the Intel Core i7 3930K,For the GPU I'm going to use Dual SLI GTX 780,I'm going to use a 27 inch 1920x1080 ASUS VG Series VG278HE 27-Inch monitor,for the cooler i'm going to use is NZXT Kraken X60.

I'm looking for maybe a Gold Plus PSU but what is the best PSU for what i need but i'm looking for maybe a 1250w.