Is a 850 watt bronze PS good enough for SLI 980?

[Jiggs360]

I currently have one gtx 980 in my system and am wondering if my current power supply (Seasonic FF-850 AM) is capable of running two GTX 980s since I'm looking into upgrading to 4k gaming? Since I have a z97 pro series MOBO and an Intel 4790k processor, the only component I'm worrying about is the psu.

 

[ko888]

System Power Supply Requirements for two NVIDIA Reference Design GeForce GTX 980 graphics cards in 2-way SLI mode
• NVIDIA specifies a minimum of a 750 Watt or greater system power supply. (Minimum system power requirement based on a PC configured with an Intel Core i7 3.2GHz 130 Watt TDP processor.)
• the system power supply must also have a maximum combined +12 Volt continuous current rating of 60 Amps or greater
• the system power supply should also have at least four 75-Watt 6-pin PCI Express supplementary power connectors. There are some non-reference design cards that require one 75-Watt 6-pin and one 150-Watt 8-pin PCI Express supplementary power connectors or two 150-Watt 8-pin PCI Express supplementary power connectors per card.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) is the most critical factor.

Overclocking of the CPU and/or GPU(s) may require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.

Seasonic M12II Evo Edition-850Bronze (SS-850AM2 Active PFC)
• OEM: Seasonic
• maximum combined +12 Volt continuous current rating: 70 Amps <===== More than Sufficient
• six 150-Watt (6+2)-pin PCI Express supplementary power connectors <===== More than Sufficient
• Full Modular Output Cables: Yes
• Official Intel Haswell Compliance: Yes
• 80 PLUS BRONZE Efficiency Certification
• 5 Year Limited Warranty

Seasonic M12II-850 Bronze (SS-850AM)
• OEM: Seasonic
• maximum combined +12 Volt continuous current rating: 70 Amps <===== More than Sufficient
• four 150-Watt (6+2)-pin PCI Express supplementary power connectors <===== Sufficient
• Semi-Modular Output Cables: Yes
• Official Intel Haswell Compliance: Yes
• 80 PLUS BRONZE Efficiency Certification
• 5 Year Limited Warranty