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What power supply do I need to SLI 2xAsus gtx 680

I need lots of connectors. I will be using 3570k overclocked to 4.5GHz.

The link to the video cards
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121634
10 answers Last reply Best Answer
More about what power supply 2xasus
  1. anymore suggestions?
  2. The one Sunius listed is the best value for a high quality modular unit with enough power for your needs. If modularity isn't important to you, you could go for a TX750 or equivalent.

    Edit: This unit is $65 after MIR and got a golden award at HardwareSecrets:
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817341041
    It's modular too.
  3. asalikus said:
    I need lots of connectors. I will be using 3570k overclocked to 4.5GHz.

    The link to the video cards
    http://www.newegg.com/Product/Product.aspx?Item=N82E16814121634


    I'd get something a little more powerfull if I was you. Just in case you ever get a third one and well you never know how much power angry the future GPU will be.

    Paying 20$ extra dollars now and keep that PSU for years is bether for your wallet then having to buy a new one in 2years + (depend how often your upgrading).

    On a side note I was thinking to go the 2x 680gtx myself. Ended with 2x 670gtx and it was my best move I'd say. 800$ for less then 10% power lost and no supply problem instead of 1000$ for so little and the supply headach.
  4. I would go with a 1000 watt power supply long before I would ever use a 750 watt on that setup. Why risk having power issues when for a little more you could not worry about running your system and 100% load and not smoke the power supply or hear a fun running like a hair dryer.
  5. Best answer
    http://www.nvidia.com/object/geforce_family.html

    Quote:
    Maximum Graphics Card Power = 195 watts
    Minimum System Power Requirement = 550 watts


    So, essentially for SLI, nVidia is recommending 745 watts.

    http://www.guru3d.com/article/asus-geforce-gtx-680-asus-directcu-ii-top-review/9

    Here is Guru3D's power supply recommendation:

    GeForce GTX 680 - On your average system the card requires you to have a 550 Watt power supply unit.
    GeForce GTX 680 SLI - On your average system the cards require you to have a 750 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./quote]

    The card can be overclocked to 20+%. Guru3D measured the Asus GCII TOP model at 181 watts under full load w/ a 13% factory OC....adding 10% to that would add say 20 watts for each card plus say another 45 watts for a OC'd CPU. If overclocking the CPU and GPU, I'd be comfy w/ a 850 watter.

    For the overclock you are looking for , I'd be looking for a PSU that can deliver 0 - 100% load w/ less than 1 % voltage variation. There are very few of those around....check jonnyguru for 10.0 performance rated units.

    Antec CP series
    Corsair HX series (except for 1000 and 1050 watt models)
    Seasooic X Series.
    XFX Black Edition Series
  6. voltage is not my problem i need the right cables because this not a regular video card it needs 14 pins to operate it and I'm going to SLI it so I need a monster power supply!


    JackNaylorPE said:
    http://www.nvidia.com/object/geforce_family.html

    Quote:
    Maximum Graphics Card Power = 195 watts
    Minimum System Power Requirement = 550 watts


    So, essentially for SLI, nVidia is recommending 745 watts.

    http://www.guru3d.com/article/asus-geforce-gtx-680-asus-directcu-ii-top-review/9

    Here is Guru3D's power supply recommendation:

    GeForce GTX 680 - On your average system the card requires you to have a 550 Watt power supply unit.
    GeForce GTX 680 SLI - On your average system the cards require you to have a 750 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./quote]

    The card can be overclocked to 20+%. Guru3D measured the Asus GCII TOP model at 181 watts under full load w/ a 13% factory OC....adding 10% to that would add say 20 watts for each card plus say another 45 watts for a OC'd CPU. If overclocking the CPU and GPU, I'd be comfy w/ a 850 watter.

    For the overclock you are looking for , I'd be looking for a PSU that can deliver 0 - 100% load w/ less than 1 % voltage variation. There are very few of those around....check jonnyguru for 10.0 performance rated units.

    Antec CP series
    Corsair HX series (except for 1000 and 1050 watt models)
    Seasooic X Series.
    XFX Black Edition Series
  7. wait what do you mean what is 12v variation

    Quote:
    no 12V variation...
    Silverstone Striders do it...
  8. Best answer selected by asalikus.
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