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Power Supply Wattage for SLI Rig?

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djmixscribble
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2014/09/22 10:55:49 (permalink)
I'm looking to upgrade from my GTX 780 3GB SC, to 2 GTX 970s SLI, but I'm not sure if my current PSU will handle it or if I should upgrade the PSU as well. I current have a Corsair 750TX V2, and I have checked multiple different wattage calculators with results ranging from 600w to 1000w. So im not sure what is accurate here. Would the 750w be ok or is that not enough wattage? If I upgrade the PSU, I would go with the EVGA SuperNOVA 1000 P2.
 
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    finiousfingers
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    Re: Power Supply Wattage for SLI Rig? 2014/09/22 11:06:16 (permalink)
    Here is a link to the place I was sent.
    http://www.extreme.outervision.com/psucalculatorlite.jsp
     
    you punch in your computer details and it will give a result.
    When I went from 2 560s to 2 770s I upgraded my 750 to a larger EVGA too. Better to be safe then sorry.

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    tucker147
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    Re: Power Supply Wattage for SLI Rig? 2014/09/22 11:08:06 (permalink)
    The 750w will work fine, just don't do any heavy overclocking.
     



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    XrayMan
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    Re: Power Supply Wattage for SLI Rig? 2014/09/22 19:12:02 (permalink)
    Moving to the PSU section.

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    Stephenk291
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    Re: Power Supply Wattage for SLI Rig? 2014/09/23 05:38:09 (permalink)
    750W will work fine...why would you jump to a 1k watt even if it wasn't?  If you want to be safe for overclocking go for the 850Watt. 1000W is completely overkill unless you plan to add a 3rd.
     
    If you are in the market for a new PSU, this is a good list to look at.
     
    http://www.tomshardware.c...-supply-tier-list.html
    post edited by Stephenk291 - 2014/09/23 05:44:11

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    NordicJedi
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    Re: Power Supply Wattage for SLI Rig? 2014/09/28 19:21:43 (permalink)
    As others have mentioned, the 750w is more than fine.  Your configuration will likely end up using a bit less power than you're currently using, giving no reason to really upgrade the psu.

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    RainStryke
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    Re: Power Supply Wattage for SLI Rig? 2014/09/28 19:37:50 (permalink)
    439w under full load:
    http://www.guru3d.com/art..._970_sli_review,4.html
     
    That's with a i7 3960X @ 4.6GHz.

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    Re: Power Supply Wattage for SLI Rig? 2014/09/29 01:50:34 (permalink)
    EVGA SuperNOVA 1000P2 is great Eco Mode Welcomed, and smart choice for GTX770/GTX970/GTX980/GK110 models in SLI.
    Except for Intel Xtreme 6-8 cores and Classified models than for SLI is better 1200P2, price difference is not huge.
    I think now people will start to interest more for 1200P2, that's only Platinum Power Supply with 10/10 score.
    I think that few peace of hardware are connected and need to go together as logic solution.
    Intel 5820K/5930K/5960X + GPU 1 Classified + GPU 2 Classified + SuperNOVA 1200P2 + Sleeve Set.
     
     
    post edited by Vlada011 - 2014/09/29 01:54:42

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    shaneduce
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    Re: Power Supply Wattage for SLI Rig? 2014/10/02 12:08:29 (permalink)
    A Kill-A-Watt meter will tell you what you pull. Get one and use it to get a real telling on your system. Web sight's will tell you all kind's of stuff it just theroy till you get a meter you will not know.
    http://www.frys.com/product/5883653?source=google&gclid=CKu1lKrVjsECFRRhfgodcS4AMQ
    This is the one I use.

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    RainStryke
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    Re: Power Supply Wattage for SLI Rig? 2014/10/02 18:39:17 (permalink)
    Kill-A-Watt meters will tell you what you are pulling from the wall. You have to make sure only the PC is plugged into it and you have to figure out the efficiency of the PSU to really know how much power your PC is using. Cause you can pull 1000w from the wall and only get around 800w to your hardware.

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