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7680x1440 4x 670 3gb vs 3x 7970 6gb

post #1 of 9
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Just wondering what would be better for 7680x1440 4x 670 3gb vs 3x 7970 6gb. thanks
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post #2 of 9
Scaling on 4 way is pretty bad and game support is almost nonexistent. I have a single 670 on a 1440p screen and it does quite well, so I would assume that x3 4gig 670's would get you pretty great performance. However the 7970 is a better card in just about every way.

BTW I would love to try out 7680x1440/1600 some time :3
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post #3 of 9
Memory bandwidth on the 670 is pitiful compared to the 7970s.
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post #4 of 9
Quote:
To make the 4GB of VRAM on the GTX 670 work for you, you are going to need at least three of them for 3-way SLI, to give you the performance to back up the VRAM. Or, we would also like to see 4GB of VRAM on 2-way GTX 680 overclocked, or even 3-way GTX 680. There are advantages to more VRAM, and 4GB can smooth out performance in a lot of games, but today's games are more GPU demanding than ever. These newer games require a lot of performance, and GTX 670 is already starting to show its age in today's latest games. We are already experiencing today the fact that we need faster GPUs in games like Far Cry 3 and Hitman: Absolution.


Now that's a trip.

http://hardocp.com/article/2013/01/14/asus_geforce_gtx_670_directcu_ii_4gb_sli_review/9
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post #5 of 9

WOW! This was a good read..... Thanks a lot, but I experienced some of these things myself. As the reason I got rid of two of my 670's. Only thing that I don't agree with is the Sleeping Dogs. Sleeping Dogs taxed my 670's on Vram. Maybe it's because I have the HD pack & they didn't use it. Even when switched to 1080, Sleeping Dogs used 1900+MB.

I would get 7970's & You'll need @least 3 of them. I'm trying my best to wait as I have upgrade fever. I'll be moving to an IVY-E Platform as soon as it comes..., but I want newer cards & if I can't wait I'll jump ship to AMD 7970's (I've never owned AMD cards)
Edited by PatrickCrowely - 1/30/13 at 11:44pm
 
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post #6 of 9
i red that rule of thumb is one 7970 per 2 1920x1080 monitors so one 7970 per 4Mpix. so you should be ok with 3 7970 for 3 2560x1440

best
revro
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post #7 of 9
i run two 670 4gbs and it's all I need atm for 7680x1440. Will upgrade to next gen nvidia cards when they are out for more performance though. Didn't buy into amd because it would require additional dp to dl-dvi active adapter for my 3rd monitor. plus the pain of finding an amd card with two dl-dvi-d and dl-dvi-i when all nvidia cards have all the dvi ports I need and all monitors don't have to be plugged into 1 card with nvidia. I can use all dvi ports between two cards. so in long run nvidia was cheaper and my fps is just fine.
post #8 of 9
I personally don't use multi-monitor gaming, preferring a single large screen (27/30inch 1440p/1600p) over 3+ smaller screens (22-25inch 1050p/1080p/1200p). Therefore, my experiences may not apply, but since this is a forum I will give them anyway wink.gif

With a single GTX670 FTW 2GB @ 1080p, there is not a single game I have had any issues with completely maxxing out, whether or not the card is (more) overclocked; however, running at >1200Mhz Core and >7000Mhz-Effective VRAM does offer a "smoother" gameplay experience.

With the same card at 1440p, I actually find that frame rates stay about the same, as while at 1080p I tend to enable 4xAA (equivalent) or higher, at 1440p I have only ever used AA a few times, and even then only the lowest setting, as I typically have to strain to see the "jaggies" at that resolution and distance (sitting about 3' away). The same is true for my 21.5" 1080p monitor, which has a pixel pitch even finer than a 27" 1440p or 30" 1600p display, and requires AT MOST 2xAA.

Now, I will absolutely be adding 1-2 more GTX670 FTW cards for SLI, as I like to have "power on tap", and will be adding a dedicated PhsyX card as well as I very much enjoy some of the PhysX enabled games, particularly BL2, and will simply dedicate it to Folding when not gaming (thinking GTX650Ti/550Ti or equivalent/better).

Every chart I've seen on 670's and SLI shows me that they have about the best 2-way GPU scaling of any card available, with 90-95% performance increases being the norm! 3-Way SLI (or CrossFire-X) doesn't scale nearly as well, but with a multi-monitor/very-high-resolution setup could very well be worthwhile. CF-X seems to scale noticeably worse than SLI, but that may just be the results I'VE SEEN and not the reality...
4-way SLI/CF-X is NOT a good idea, and you'd be better off with a PhysX card in terms of performance, even though relatively few games support it.
   
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post #9 of 9
3x7950s are doing nicely with 7680x1440 for BF3.

Sadly if you aren't going water the noise you will kill your ears.
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