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Would this PSU cut it?

I have this from what I can tell it should run 2x580s because the 580 stays under 300W at load, but I'm not exactly sure if it would be enough.

Running a single 965 BE, 4GBs of RAM and a single 750GB HDD too (not much power draw there)
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  1. The PC Power & Cooling units were very good units, among the best, that silencer is one of them, it shouldnt have any problems with 2 GTX 580s
    http://www.hardwaresecrets.com/article/553/1
  2. No that won't cut it.I mean technically speaking the total system draw for a GTX580 SLI is 720watts but thats with a really good PSU that you can run it at 750watts.That PSU doesn't look like it's very reliable and it's also bad to run PSU's at their max for long periods of time.Before you know it in a couple months it could die and take everything with it.
    Power Consumption:
    http://www.guru3d.com/article/geforce-gtx-580-sli-review/14

    I would reccomend getting a 850watt Antec,Corsair or anything that is more of a reliable brand.

    Corsair 850watt $140=$130 after MIR + $6 Shipping
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139009

    Crosair 850watt(Modular) $165=$145 after MIR + $6 Shipping
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139011

    Seasonic 850watt $125 + $10 Shipping
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151100

    Personally i would get the Seasonic PSU.It's a very reliable brand and it's really cheap.

    EDIT:My bad i've never heard of Power PC PSU's before,thoght it was a no name brand.I still think you should ugprade to a higher wattage PSU.
  3. PC Power and Cooling is one of the best psu's out there and has been around a long time.

    http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007657%2050009830&IsNodeId=1&bop=And&Order=PRICE&PageSize=20

    Either way you need 850w minimum imo.

    I think the bigger question is, how bad would your cpu bottleneck two of those cards? I'm betting a lot.
  4. I don't think it would Bottleneck to bad.Stock speeds for the 965 is 3.4ghz.Just needs to O.C. to around 4ghz and should have no problems.
  5. According to NVIDIA's own specifications each reference clocked GeForce GTX 580 has a Graphics Card Power of 244 Watts. This means it will draw up to 20.3 Amps from the +12 Volt rail(s). NVIDIA states that the minimum recommended power supply is one with 600 Watts and with a combined +12 Volt current rating of at least 42 Amps.

    For two GeForce GTX 580 in 2-way SLI a power supply with at least 850 Watts and with a combined +12 Volt current rating of at least 62 Amps is recommended.

    Power supply wattage is not the specification you should be focusing on. In modern desktop systems the CPU and graphics card(s) obtain all of their power from the +12 Volt rail(s) of the power supply. Make sure that the combined +12 Volt current output on power supply that you are intending to purchase meets or exceeds the recommended.

    Power supplies should not be run at more than 80% of their actual maximum for any length of time.
  6. Well if I upgrade my PSU I will want a nice one for later on and triple SLI.
    So should I get a solid 1200W or 1000W?

    I have my eye on this one
  7. System power draw with x3 GTX580's is around 950watts.Getting a 1000watt PSU would be reccomended but i think 1200 would be optimal,nice to always have some headroom.
    x3gtx580's Power Consumption=
    http://www.guru3d.com/article/geforce-gtx-580-3-way-sli-review/14

    Corsair 1200watt(Modular) $280=$260 after MIR + Free Shipping
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139014

    Antec 1200watt(Modular) $300 + $12 Shipping
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371043

    Both are really high end PSU's.I figure at that level of wattage and money every PSU is top notch.All are typically Gold and Modular.
  8. Best answer
    sowexly said:
    Well if I upgrade my PSU I will want a nice one for later on and triple SLI.
    So should I get a solid 1200W or 1000W?

    I have my eye on this one

    Three GeForce GTX 580 in 3-way SLI will require a power supply of at least 1200 Watts and with a combined +12 Volt current rating of at least 82 Amps.

    The Corsair Professional Series Gold AX1200 CMPSU-1200AX is able to provide up to 100.4 Amps on its single +12 Volt rail so it's more than enough.
  9. Best answer selected by Sowexly.
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