Gtx 670 SLI Power Consumption

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kevyn8000201

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Oct 14, 2012
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Hi everyone

I'm looking to get a second gtx 670 and was wondering exactly how much power I would need.
My specs are:
i5-3470
2x4gb corsair cl9 kit
Toshiba HDD
2gb palit jetstream gtx 670 oc(factory oc)
475w psu

would I need to change my psu in order to use SLI?
Have a nice day and thanks people =D
 
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Deleted member 217926

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Yes you will need a new power supply. In fact I am a bit worried about you running 1 on a 475w power supply since there is not a single quality unit that's labeled as 475 watts. If you have some junk brand unit it very well might not be able to put out anywhere near 475 watts.

One GTX 670 needs a recommended 500 watts. 750 watts for Sli.

http://www.realhardtechx.com/index_archivos/Page362.htm

Stick with Corsair, Seasonic, PC Power and Cooling, XFX, Silverstone, Enermax, OCZ, Antec or the higher efficiency Rosewill units for quality. Avoid Coolermaster and Thermaltake.
 
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ko888

ko888

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Feb 18, 2009
16,708
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84,990
For a system using a single GeForce GTX 670 graphics card NVIDIA specifies a minimum of a 500 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 30 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.

For a system using two NVIDIA reference design GeForce GTX 670 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 700 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 45 Amps or greater and that has at least four 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most important factor.

Overclocking of the CPU and/or GPU(s) will 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.

What is the brand and model of your 450W PSU?
 
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