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 Post subject: Geforce GTX 660 2-Way SLI or Geforce GTX 760 Ti
PostPosted: Thu May 16, 2013 6:51 pm 
Klamath
Klamath

Joined: Mon Jul 02, 2007 1:02 pm
Posts: 286
Hi All,

Which would be the more powerful configuration. 2 GTX 660's in SLI or 1 of the unreleased GTX 760 Ti. I know it's not on the market yet and this is speculation until the final benchmarks are in, but which do you think would be the more powerful set-up for gaming with the information you have at the moment on the 760 Ti. I am soon to be the owner of a GTX 660 due to an RMA upgrade and purchasing another would only set me back about $200, $100 less than what the 760 Ti is rumored to cost. Plus, if it is a more powerful set-up for gaming I would say it's win-win. Also, would I get full use of the combined 4GB of memory on the GTX 660 cards if used in SLI? Thanks in advance for any info and insight you can provide to me.


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 Post subject: Re: Geforce GTX 660 2-Way SLI or Geforce GTX 760 Ti
PostPosted: Thu May 16, 2013 8:58 pm 
Smithfield
Smithfield

Joined: Sun Jun 18, 2006 7:37 pm
Posts: 5297
Chances are the GTX 660 in SLI will still beat a single GTX 760 Ti.

This is just my opinion, but honestly I wouldn't really do SLI. I've done it, and while I did like the performance I was getting, it just didn't seem all that glamorous with the extra power consumption, noise, and heat. If you're running a 1080p or so monitor, a GTX 660 should buy you into at least when NVIDIA's Maxwell comes out.

Also SLI doesn't combine memory.


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 Post subject: Re: Geforce GTX 660 2-Way SLI or Geforce GTX 760 Ti
PostPosted: Thu May 16, 2013 9:33 pm 
Klamath
Klamath

Joined: Mon Jul 02, 2007 1:02 pm
Posts: 286
LatiosXT wrote:
Chances are the GTX 660 in SLI will still beat a single GTX 760 Ti.

This is just my opinion, but honestly I wouldn't really do SLI. I've done it, and while I did like the performance I was getting, it just didn't seem all that glamorous with the extra power consumption, noise, and heat. If you're running a 1080p or so monitor, a GTX 660 should buy you into at least when NVIDIA's Maxwell comes out.

Also SLI doesn't combine memory.


Thanks for the reply and input. Would a 750w OCZ PSU be enough to power a 2-way GTX 660 SLI configuration? My other components will be a Haswell i5 CPU, 16GB DDR3 2400Mhz Memory, Blu-Ray Burner, 2TB Toshiba 7200RPM Hard Drive, and a 500GB Samsung SSD. I'm leaning toward the SLI configuration at this point because of the price/performance ratio being in favor of it. I did some browsing on the web and it seems that a GTX 760 Ti will be as powerful as a GTX 670 and that dual GTX 660s should be slightly faster than a GTX 680, so basically a GTX 660 SLI 2-way setup will be substantially faster than a GTX 760 Ti. I don't know how accurate this information is though. I'm willing to put up with the noise of SLI as the particular cards I'm getting are said to be rather quiet, and heat isn't that much of an issue as the cards will be housed in a Corsair Carbide 500R with a 200mm side fan and 4 other fans as well as a water cooled CPU. Power consumption might be a problem, however, which is why I asked if my 750w PSU will be able to handle both cards with my other components.

It's a shame SLI doesn't make use of both cards' memory. So basically a game running on both cards will still only use 2GB? Once again, thanks for your reply, Latios.


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 Post subject: Re: Geforce GTX 660 2-Way SLI or Geforce GTX 760 Ti
PostPosted: Fri May 17, 2013 1:35 am 
Smithfield
Smithfield

Joined: Sun Jun 18, 2006 7:37 pm
Posts: 5297
Well, there might be a chance the 760 Ti might outdo a 670, but considering a 660 is a bit more than half as powerful as a 680 and SLI tends to be really good at scaling, I'd still say two 660's have a chance of outperforming a 760.

And yes, basically any game thinks the available graphics memory is 2GB. The reason is because both cards have to render the essentially the same thing, but the drivers tell the cards what to do and when to do it. If you combined them, you would have an issue with say assets that Card #2 needs is on Card #1's memory, and you have latency to deal with. Besides that, Card #2 is probably going to make a copy so it doesn't have to keep going to Card #1. Thus your effective performance is going to hurt if you combine them.


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 Post subject: Re: Geforce GTX 660 2-Way SLI or Geforce GTX 760 Ti
PostPosted: Fri May 17, 2013 5:42 am 
Klamath
Klamath

Joined: Mon Jul 02, 2007 1:02 pm
Posts: 286
How about a 750w power supply for a 2-way SLI setup, with the other components I listed? Does it have enough juice?


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 Post subject: Re: Geforce GTX 660 2-Way SLI or Geforce GTX 760 Ti
PostPosted: Fri May 17, 2013 8:54 am 
Klamath
Klamath

Joined: Mon Jul 02, 2007 1:02 pm
Posts: 286
Found Newegg's PSU calculator and it says I would only need a 622w PSU for my components, so I should be good with my 750w OCZ PSU. It has 2 PCI-E 6 pin connectors and 2 PCI-E 6+2 connectors as well so I should be all set for SLI once I get a new Z87 SLI-ready motherboard. Thanks again for your advice and input.


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 Post subject: Re: Geforce GTX 660 2-Way SLI or Geforce GTX 760 Ti
PostPosted: Fri May 17, 2013 10:17 am 
Klamath
Klamath

Joined: Mon Jul 02, 2007 1:02 pm
Posts: 286
Oh one more thing.. I've never configured an SLI array before, and I've read you need some sort of bridge to connect the two cards. Do SLI capable Video cards come with this bridge nowadays?


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 Post subject: Re: Geforce GTX 660 2-Way SLI or Geforce GTX 760 Ti
PostPosted: Fri May 17, 2013 10:59 am 
Smithfield
Smithfield

Joined: Sun Jun 18, 2006 7:37 pm
Posts: 5297
The SLI bridge is supposed to come with the motherboard. But I'm sure you can find one somewhere.

EDIT: Bingo


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 Post subject: Re: Geforce GTX 660 2-Way SLI or Geforce GTX 760 Ti
PostPosted: Fri May 17, 2013 3:22 pm 
Klamath
Klamath

Joined: Mon Jul 02, 2007 1:02 pm
Posts: 286
Thanks.


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