Two GTX 760's In SLI Wattage

[TechnozzWhizzKidzz]

What amount of wattage power supply would I need for two GTX 760's in SLI. I will run one at first but I might need 2 in the future. I am currently looking at the Corsair CX750, and I'm going to invest £20 more in my motherboard, so I can get one that will support SLI, incase I need it in the future.

Thanks in advance.

 

[Intel God]

750w is plenty for a pair in SLI