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Which CPU to go with GTX570.

I was planning to have i5 2500 to go with GTX570, mainly for gaming. I plan to OC the GTX570, and I wonder if i5 2300 (2.8GHz/3.2GHz) is already enough to match this GTX570?

Also for i5 2500 (no OC) and GTX570 (OC), how big PSU do I need? Gigabyte official website says minimum 650w PSU is required for their GTX570.

Thank you!
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  1. Best answer
    Either processor would be able to fully utilize the 570. As far as required power:

    http://www.guru3d.com/article/geforce-gtx-570-review/8

    You could get away with a 600W (I'd say 500 if the video card weren't OC'd) if you get the right one. This Corsair 600W is totally sufficient for either an i3 or i5 build with an OC'd 570:

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139019&cm_re=corsair_psu-_-17-139-019-_-Product

    Otherwise, if you feel safer going with what Gigabyte recommends, a Corsair 650W at $20 more:

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020&cm_re=corsair_psu-_-17-139-020-_-Product

    A quality 600W supply as I've recommended will truly be sufficient, though. Gigabyte puts a higher wattage level as a recommendation in case someone's skimming the unboxed PSU bargain bin for the cheapest supply possible. By saying you need 650W, they figure they are covering most of the supplies out there. If you look at the power requirements, though, you'll find you don't need that much if you pick up a good-quality supply with sufficient amps and wattage on the 12v rail.
  2. A good compromise would be i5-2400. i5-2300 is a bit too slow.
  3. 600 or 650 w psu will do the job
    here is a nice psu

    Antec EarthWatts EA-650 GREEN 650W ATX12V v2.3 SLI Ready CrossFire Certified 80 PLUS BRONZE Certified Active PFC Power Supply

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371044
  4. Best answer selected by ryanz2009.
  5. This topic has been closed by Mousemonkey
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