power for 2 graphic cards

[Daysher]

Im pre building a new pc and i want 2 graphic cards with SLI and i need to know how much power i need for them?

How much power do i need for:
2 = Gigabyte GeForce GTX 960 Gaming G1 Windforce 4Gb GDDR5 with SLI

 

[Zerk2012]

About 250 Watts just for the video cards.
This says the TDP is 120 Watts for one video card. http://www.techpowerup.com/210450/gigabyte-announces-a-pair-of-geforce-gtx-960-4gb-graphics-cards.html
I would strongly recommend you get a single GTX 970 over SLI of 2 weak cards. With games that scale good with SLI you will get better performance but with the games that scale bad the single card will shine.

 

[migronesien]

As already mentioned this is barely better than a 970 and costs alot more. With the 970 you still have the option to SLI it in the near future if you want/need more power.
What resolution are you playing at? Because a single 970 usually does play almost everything on max settings @ 1080p.

If you still want SLI 960s. Go for 650-750 watt. Or for around 850 if you want to keep the PSU for your next set of GPUs.
750-850 is also fine for SLIing 970s.