750watt power supply enough?

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WinshesteR

Reputable
Nov 14, 2014
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Hello,
Ok I the following
Motherboard: Gigabyte GA-990-fxa ud7
Cpu: amd fx 8350
Gpu: Gigabyte gtx770 2gb oc
Cpu cooling: cooler master seidon 120mm
Case fans:x5 corsair 120mm red led ram: 2x2 Kingston, 2x4 Kingston fury
HDD: 1tb don't remember name

Well I'm thinking about buying a 750watt power supply (corsair rm 750) and I would like to know if this is enough wattage and if I could probably install another gtx 770, putting the extra gtx a side wish is not so important atm I would be very appreciated if anyone could help me.
 
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ko888
For a system using two GeForce GTX 770 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 850 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 59 Amps or greater and that has at least two 75 Watt 6-pin and two 150 Watt 8-pin PCI Express supplementary power connectors. Some of the non-Reference Design GeForce GTX 770 cards have two 150 Watt 8-pin PCI Express supplementary power connectors (e.g. GIGABYTE GV-N770OC-4GD (rev. 2.0), MSI GTX 770 Lightning, MSI GTX 770 TwinFrozr Gaming) so at least four 150 Watt 8-pin PCI Express supplementary power connectors will be required...
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ko888

ko888

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Feb 18, 2009
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For a system using two GeForce GTX 770 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 850 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 59 Amps or greater and that has at least two 75 Watt 6-pin and two 150 Watt 8-pin PCI Express supplementary power connectors. Some of the non-Reference Design GeForce GTX 770 cards have two 150 Watt 8-pin PCI Express supplementary power connectors (e.g. GIGABYTE GV-N770OC-4GD (rev. 2.0), MSI GTX 770 Lightning, MSI GTX 770 TwinFrozr Gaming) so at least four 150 Watt 8-pin PCI Express supplementary power connectors will be required. (Minimum system power requirement based on a PC configured with an Intel Core i7 3.2GHz 130 Watt TDP processor.)

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.

If you're going to be overclocking the AMD FX 8350 then you're better off getting an 850W PSU. That CPU draws considerably more power when overclocked.

Overclocking the graphics cards will also increase power consumption.
 
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