is 750w enough for sli 970's

[NotSponge]

I Have looked around at the different tools for calculating total system power use, the psu will be a evga gold 750w supernova g2 ( http://www.overclockers.co.uk/showproduct.php?prodid=CA-012-EA ) and the gpus will be twin gtx 970's from gigabyte, the g1 variant, they will go along with an i7-4790k and I'd like to do some overclocking on both gpus and the cpu

Thanks

 

[NotSponge]

Thanks for quick replies, I heard it would be enough but I wanted peace of mind

Thanks again guys