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GTX680 vs GTX660x2

post #1 of 34
Thread Starter 
Hi you guys.

I was looking around at cyber power PC.
I noticed that if I build 2 identical computers but on one I use a gtx680 and the other I use 2xgtx660s the price of the PC is actually 97$ less for the 2xgtx660s. Wow!

So my next question is: will 2 660s perform as well as a single 680?

Ps: these are all 2gb cards. And I plan on using only a single monitor.
Pss: will the asus p9x79 LE main board be ok for a 2 card setup? Or will i need a higher end main board?

Thanks.
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post #2 of 34
Two GTX 660s will perform considerably better than a single GTX 680. Considering the price difference, it's a good deal. If they had been the same price, I might have taken the GTX 680 to avoid SLI issues, but it's hard to justify in this case.

An ASUS P9X79 LE will be just fine for SLI.
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post #3 of 34
+1 for the 660s in SLI. thumb.gif The GTX 660ti in SLI would be even better.
post #4 of 34
Thread Starter 
Hey thanks for the response.
So the 2 x 660 cards will actually perform better then a single 680.
That's awesome! The reason I asked about the asus LE is because I thought the
660s would each need its own PCIEx16 slot. Doesn't the LE only have 1? Or am I miss reading
Something?

Also another question.
Are some software applications and or games not compatible with SLI?
Will some apps and games only use one card while ignoring the second one?

Thanks again for all your help
Happy time PC.
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post #5 of 34
Why not get a 670 which performs comparably to a 680 for much cheaper? $340?

http://slickdeals.net/newsearch.php?firstonly=1&q=670

Scratch that, you're getting a prebuild.
post #6 of 34
The P9X79 LE has three PCI-E slots, two x16 and one x8.

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131855
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post #7 of 34
Do they give you a 670 Option? If so I'd take that over the 660 SLI or the 680, if not then 660 SLI because it is cheaper in your case.
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post #8 of 34
Thread Starter 
Hey thanks for the response.
So the 2 x 660 cards will actually perform better then a single 680.
That's awesome! The reason I asked about the asus LE is because I thought the
660s would each need its own PCIEx16 slot. Doesn't the LE only have 1? Or am I miss reading
Something?

Also another question.
Are some software applications and or games not compatible with SLI?
Will some apps and games only use one card while ignoring the second one?

Thanks again for all your help
Happy time PC.
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3930K Asus P9X79LE EVGA GTX660 Ti Superclocked EVGA GTX660 Ti Superclocked 
RAMHard DriveHard DriveOptical Drive
16 gigs A-Data Sandisk 128 ssd 2 TB 7200 rpm spinner Panasonic Blue Rey Reader / Writer 
CoolingOSMonitorKeyboard
Asatek 570LX water Windows 8 pro (64bit) 40 inch Sony Bravia TV at 1080x1920 AZZA 
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Extreme Gear 800W Azza Hurricane 2000 AZZA Mother board 7.1 
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Happy time PC.
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post #9 of 34
There you go mate. I did the comparison for you in GPUREVIEW. click on multi-GPU for the 660 and compare

http://www.gpureview.com/show_cards.php?card1=680&card2=667#

Edit - Here is the difference between 2 x 660 in SLI and 2 x 660ti in SLI

http://www.gpureview.com/show_cards.php?card1=670&card2=680#

Do the same this and click on multi-GPU the ti is much faster
Edited by K62-RIG - 10/17/12 at 8:08pm
post #10 of 34
Thread Starter 
Quote:
Originally Posted by sherlock View Post

Do they give you a 670 Option? If so I'd take that over the 660 SLI or the 680, if not then 660 SLI because it is cheaper in your case.

Yes there is a 670 option. But I wanted the power of a 680. Just withou the price.
2 x 670s are very expensive.
Happy time PC.
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Happy time PC.
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