SLI on a 700 watt psu

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azmodan

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Mar 27, 2013
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So I just finished my first build ever and am getting ready in a couple of weeks to add a second GPU ( hopefully) I'm running on a 700 watt psu (linked below) and was wondering if I could pickup and run a second EVGA 660ti 2gb gpu with the current power supply. While I'm aware of the fact that the psu has only 2 six pin connectors the video card comes with a molex to six pin adapter for the second card. Will I be able to run to or am I gonna have to add a larger power supply first?
 
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Airm3n-1292454

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Mar 31, 2013
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I would say as long as the psu is 80 plus certified you should be ok. If not then it would be a maybe depending on the power output of the psu. That and your link doesn't work for me so I don't know what psu you have.
 
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Airm3n-1292454

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Mar 31, 2013
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http://www.eggxpert.com/forums/thread/323050.aspx

Have a look here your psu falls into the 4th tier and says only use about 75% of labeled wattage so that runs you down to 525 watts unless yours happens to be a different brand but it does say "Cooler Master eXtreme". Reading on the cooler master website it says "Our Extreme Power Plus 700W provides over 80% efficiency at typical loading" which to me seems a bit shady because they aren't actually saying it 80 plus certified.
http://www.coolermaster-usa.com/product.php?product_id=2991

As well reading on the cooler master site it says you get 52A on the 12 volt rail which when looking at the evga website for the card :
http://www.evga.com/Products/Product.aspx?pn=02G-P4-3660-KR
it says " Minimum of a 450 Watt power supply. (Minimum recommended power supply with +12 Volt current rating of 24 Amps.) " So that would leave you not much in the way of room at all especially considering that says minimum. And, this is all considering that your psu is actually working at the rated output as in brand new condition and they are telling the whole truth about the psu.
 
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Airm3n-1292454

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Mar 31, 2013
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Personally I have had the best luck with the corsair psu's. I prefer the HX and TX series. OCZ isn't too bad either though I have had a few quit before more from I think just too much power draw than anything but they aren't too bad.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139010&Tpk=hx750&IsVirtualParent=1
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139021
Or seasonic is supposed to be good as well
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151100
This last one is probably your best bet if you are considering any of them. Seems like the best price and its 80 plus silver as well which is better than the corsairs. Would put you close to double the power you need on your rails which would leave it running cool and quiet for many years.
 
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