how large of a psu do i really need for my comp

My build is a fx 8350, 16gbs(on four different sticks) of ram, GeForce 760 ssd and 7200 rpm hdd with 5 fans. the five fans come with the case. Thank you for the help. If I overclocked the CPU and GPU would that change any thing, would 620w PSU be efficient
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More about large psu comp
  1. I would go for a quality 550w+ My 550w is running a 770 and i7 870 without a problem, so it should run fine. I prefer modular and Gold or Platinum rated PSU's but only Bronze or better is considered a requirement by most people.
  2. I do believe the answer as always is an XFX550 WATT PRO CORE psu.
    This seems to have the 12v wallop (Amps) to handle any decent single graphics card and is made by seasonic, resulting in a tier 2 piece of equipment.
  3. They make a 650 watt version if I overestimated its abilities.
  4. at least 35A on 12V rail
  5. Best answer
    For a system using a single NVIDIA Reference Design GeForce GTX 760 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. Some of the non-Reference Design GeForce GTX 760 cards have a single 8-pin (e.g. ASUS GTX 760 DirectCU II OC) or two 8-pin (e.g. MSI GTX 760 HAWK) or one 6-pin and one 8-pin (e.g. Gigabyte GTX 760 WindForce OC, EVGA GTX 760 SC w/ACX Cooler, MSI GTX 760 TwinFrozr Gaming) PCI Express supplementary power connectors.

    If you have or are planning on getting an MSI GTX 760 HAWK the XFX Pro Series Core Edition 550W won't have the two 8-pin PCI Express supplementary power connectors that will be needed. You would have to move up to the 650W model or get a PSU from a different brand like a Seasonic M12 II Bronze Evo Edition 520W (SS-520GM2).
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