GTX 670 Sli or one GTX 780?

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jackaboonie

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Jan 26, 2014
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I have one GTX 670 in my PC, and with all these "next gen" games coming up, they look pretty resource intensive. I'm wondering if I'd be better to buy another 670 and save some money, or another 780? With the sli'd 670s I think I'd need another power supply though since I'm only running a 600w at the moment.

Other specs:

4770k
Asrock z87 Extreme4
16gb RAM
 
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V
Two GTX 670 cards in SLI will be faster than a single GTX 780.
In the benchmark on this page, two GTX 670 cards in SLI would be similar to the GTX 690:
http://www.guru3d.com/articles_pages/geforce_gtx_770_sli_review,12.html

For your power supply:
84W CPU + 2 x GTX 670 cards requires a power supply with 580W on the +12V rail.
125W CPU + 2 x GTX 670 cards requires a power supply with 630W on the +12V rail.

You also need 4 PCI-E power connectors, and if the power supply doesn't have them there is a good chance it is not enough.

Your power supply may be enough if it is good quality and you have a lower powered CPU (e.g. Intel sandy bridge, ivy bridge or haswell). With a higher powered CPU (e.g. AMD FX series) it definitely won't be...
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Jameson Clark

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Jul 15, 2013
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well since a new psu will cut into your budget and you can get a bit back by selling the 670 I would suggest the 780. its always better to go with a single card over sli, it just works better and not all games even support sli so on those your out of luck. Also you leave yourself a lot more room for future upgrades. of course the 780 will still be more expensive so perhaps that is a reason to go sli and new psu
 
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VincentP

Splendid
Oct 18, 2013
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Two GTX 670 cards in SLI will be faster than a single GTX 780.
In the benchmark on this page, two GTX 670 cards in SLI would be similar to the GTX 690:
http://www.guru3d.com/articles_pages/geforce_gtx_770_sli_review,12.html

For your power supply:
84W CPU + 2 x GTX 670 cards requires a power supply with 580W on the +12V rail.
125W CPU + 2 x GTX 670 cards requires a power supply with 630W on the +12V rail.

You also need 4 PCI-E power connectors, and if the power supply doesn't have them there is a good chance it is not enough.

Your power supply may be enough if it is good quality and you have a lower powered CPU (e.g. Intel sandy bridge, ivy bridge or haswell). With a higher powered CPU (e.g. AMD FX series) it definitely won't be enough.

What is your CPU?
What is the model of your power supply?

 
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