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Power supply question

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  • Power Supplies
  • Components
Last response: in Components
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June 22, 2013 2:18:06 PM

how many watts in a power supply will I need for a Intel Core i5-3550 and a nvidia geforce gtx 660 with a motherboard that supports both sli and crossfire

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a b ) Power supply
June 22, 2013 2:21:10 PM

500w should be plenty, unless you plan to SLI your graphics card, in which case 650w-700w should be fine. Ensure your PSU is rated at least 80+ Bronze and is from a good manufacturer such as XFX, Corsair (CX series isn't so good, but still better than most), Antec or Seasonic.
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a c 154 ) Power supply
June 22, 2013 2:39:06 PM

http://www.guru3d.com/articles_pages/asus_geforce_gtx_6...

Quote:
Here is Guru3Ds power supply recommendation:

GeForce GTX 660 Ti - On your average system the card requires you to have a 450~500 Watt power supply unit.
GeForce GTX 660 Ti SLI - On your average system the cards require you to have a 700 Watt power supply unit as minimum.

If you are going to overclock GPU or processor, then we do recommend you purchase something with some more stamina.
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a c 1218 ) Power supply
June 22, 2013 2:43:11 PM

For a system using two GeForce GTX 660 (non-Ti) graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 600 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 36 Amps or greater and that has at least two 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 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.
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