Guys need help here..
My friend is building a gaming pc and his specs are as below:

Intel Core i7 4790K
MSI z97 Gaming 7
MSI GTX 970
8GBs of Corsair Dominator Ram
Samsung 840 EVO 250GB SSD
2 Western Digital Blue 1TB
Corsair H100i
Normal DVDRW
7 Fans
4 LED stripss
2 CCFL

His rig is almost the same as mine except that i have more fans and less lighting but im using the Seasonic 760W platinum. He is planning to get either the Corsair HX750i or Corsair HX850i (mainly for corsair link i guess) and he is planning on doing SLI maybe around mid next year.. So i cant give him any advice since i dont know anything about SLI and my Seasonic 760W platinum is serving me very well..

So do give your opinions guys.
Your help is always appreciated.
Thanks guys!

So both HX750i and HX850i would do the job?
Haha ive told him that..

He is so fussy that he is confused about the efficiency of both power supply..
You know that a power supply is at its best at >50% load..
So he is afraid that if he buy the HX850i now, he will waste on his electrical bill before getting a second GTX 970..
And if its the HX750i, he is afraid of not enough power in the future..

Since you said that both also can, ill tell him that again
Haha but this time its the Sifu that taught me about power supply which is TristanX

Thanks tristan!

Thanks a lot!