Is my power supply up to the task?

[Popoff]

This summer i plan to add another 7970 to my rig and move up to 2560x1440 as well. I want to know will my Power supply be up to the task, or if i should plan to step up to a 850 or 1000W.
This is my power supply: http://www.newegg.com/Product/Product.aspx?Item=N82E16817438006

So after the upgrade this will be my entire build
Windows 7 Home Premium 64-bit
LG 2560x1440p 27" IPS Monitor
Intel i5-3570k
2x Radeon HD7970
2TB WD Black RAID Edition
Asrock Extreme6 Thunderbolt
3x 120mm fans
200mm bitfenix spectre pro
CM Hyper 212 evo
Sennheiser HD518s
Zalman Clip on mic

 

[rolli59]

It will do it although the recommendations is 800watts since it has a powerful +12 volt rail and more than the specified amps.

 

[Popoff]

Thanks rolli. Thats what I needed to know.