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Ondux
10-06-2012, 06:58 PM
Hello everyone!

First time poster (I signed up after I got news of the Catleap 2B... Still waiting for it to be back in stock x).

I've been hovering over the buy-button for a pair of GTX 670, mainly because I will need alot more GPU processing-power to take advantage of the Catleap 2B while gaming.
Perhaps I will need an even better dual-GPU setup?

I've also been thinking about waiting till christmas before getting a new GPU. Hoping that AMD will release the 8000 series then. I've heard rumors of the 8970 beeing 35 - 40 % faster than the 7970 - any thoughts?


Does anyone here have any experience playing BF3 with Ultra settings with the Catleap 2B @ 120hz, and ~120 FPS in-game?

Perhaps running without 4xAA will require a less demanding GPU. Since it doesn't matter much at 2560x1440 resolution?

What sort of setup would I need to accomplish 120 FPS @ 2560x1440 @ 120 hz in BF3 on ultra settings?


Your efforts are much appreciated, thank you.

Best regards,
Ondux

Sneaky
10-08-2012, 12:27 AM
On these monitors you don't really need to use Ultra settings for BF3 to look amazing.
2 x GTX670's will do you fine.
;)

EniGmA1987
10-09-2012, 08:21 PM
The big rumor on the next Nvidia series is it wont be much better than the current stuff.
AMD series should be coming soon and the rumors have it at 35%~ faster than current.


I would still go with dual GTX670 4GB cards though. I have owned many cards from both companies and while I have have only very rarely had any issues with AMD's drivers, Nvidia still has smoother dual card performance and MUCH better control panel for the GPU. And the 670's are plenty powerful, you will probably be held back by bad engine coding more than anything in games. Nothing can fix that.

HyperMatrix
10-09-2012, 08:47 PM
The rumoured specs I've seen on the 8970 series leads me to believe that at stock clocks, it will be a 40-45% performance boost over the 7970. The performance difference once overclocked may differ as they may have different maximum overclock capabilities. That plays in well to my earlier assessment that the GTX 780 will end up being about 1/3rd performance improvement over the 680. About 38% to be exact, actually. It should put the cards neck and neck up against each other, at the same die size.

If I were buying now, I'd have a hard time deciding between 2 cheap 7970's, or 2 670's. 4GB is too much and you won't need it. 3GB will be enough to not limit you at 2GB like the standard version of the 670/680. And price is a big factor...you can probably get a couple used 7970's for $250-$300 each, meaning you've only spent $500-$600 on a crossfire setup. And you'll have the option of upgrading to next generation cards if you ever needed/wanted to do it without much of a loss in $$, as you can turn around and sell your 7970's with maybe $100-$200 loss at that point.

So...I'd go with the cheaper radeon 7970's now. And probably switch to the 780's when they come out.

ACEDDAUQS
10-23-2012, 12:27 AM
What about 7950s? OC'd of course

FattyD
10-23-2012, 03:44 AM
If you are going with a dual GPU setup you should take a look on this post (Link in bottom, swedish review). I don't know how much microstuttering you're able to see on one of those catleap 2b monitors, but you should really take this into consideration.

http://i.imgur.com/eibID.png

Whole review: http://www.sweclockers.com/recension/15381-geforce-gtx-690-varldens-snabbaste-grafikkort/18#pagehead

winterhell
10-23-2012, 04:56 AM
IMO GTX 660 Ti is a better bang for the buck than 670 or 680, SLI or no SLI.
http://www.guru3d.com/miraserver/images/2012/gtx660-sli/Untitled-13.png
As you can see here, no current GPU would be able to max the game, but if you drop the AA and the Ultra to High, you may reach your target framerate and resolution. I can't talk about BF3, but on Crysis 2, High Texture pack , DX11, 2560x1440 on "High" my 660 Ti gets 70-120 fps depending on the scene complexity. With SLI I bet it'll easily cap 120 fps.
The other "economic" way would be like others mentioned to wait for the next generation of video cards, which are surely to have higher performance per watt/$.

Sneaky
10-23-2012, 05:39 AM
Yep after going from an HD6950 to a GTX580 ... I definitely noticed the smoothness, won't be going back to ATI
unless they make some serious improvements.

HyperMatrix
10-23-2012, 09:56 AM
If you are going with a dual GPU setup you should take a look on this post (Link in bottom, swedish review). I don't know how much microstuttering you're able to see on one of those catleap 2b monitors, but you should really take this into consideration.

http://i.imgur.com/eibID.png

Whole review: http://www.sweclockers.com/recension/15381-geforce-gtx-690-varldens-snabbaste-grafikkort/18#pagehead


Thanks for this. No wonder whitespider said he saw a lot of micro stutter with his 6990 and I told him I couldn't see it at all. There's hardly any micro stutter with the Kepler series of cards based on this chart.

HyperMatrix
10-23-2012, 10:10 AM
IMO GTX 660 Ti is a better bang for the buck than 670 or 680, SLI or no SLI.
http://www.guru3d.com/miraserver/images/2012/gtx660-sli/Untitled-13.png
As you can see here, no current GPU would be able to max the game, but if you drop the AA and the Ultra to High, you may reach your target framerate and resolution. I can't talk about BF3, but on Crysis 2, High Texture pack , DX11, 2560x1440 on "High" my 660 Ti gets 70-120 fps depending on the scene complexity. With SLI I bet it'll easily cap 120 fps.
The other "economic" way would be like others mentioned to wait for the next generation of video cards, which are surely to have higher performance per watt/$.

One thing I've realized about sli setups is how much of a bottleneck cpu's become. At 1920x1080 res, you may not be getting a true indicator of the cards performance. Running a game at higher resolutions with larger textures is likely to cause some issues for the 660 so I'd probably still recommend a 670 over it, but all in all if you're happy running at lower than ultra settings it seems like quite a worthy card, especially for its price.

BlackOctagon
10-23-2012, 12:31 PM
Thanks for posting that graph. Depressing news for those of us with a 7970 and looking to buy another one :(
Still, you potentially saved me from a rather expensive regret, so thanks.

Ondux
10-24-2012, 08:50 AM
Thanks a bunch for the expert answers, it was really informative and exactly what I needed.

However seeing that Hyper is talking about the CPU bottleneck, I am a bit worried that it might be the case for me.

In regards to the above: I'm running with a Core i7-920 @ 3.3 GHz. Will this affect the performance? I've been running it stable at 3.5 before, but I didn't really 'need' the extra performance, so I'm now running at 3.3 at below stock volt. I can probably make it run stable at 3.8 GHz (not on stock volt ofcourse), but I'm not entirely sure as I haven't had a go at it yet. I'm using a Noctua NH-U12P air cooler.

Thanks again.

Even if I decide to run with dual GPU's they will be running on them with PCI-e 2.0 with x16 x16 x1. Since I have a some what old motherboard (Asus P6T Deluxe V2).

Will this also be somewhat of a bottleneck for me?


I'm very much inclined to getting the GTX 670's, but I will be looking in to the GTX 660 Ti setup.

Thanks again.

HyperMatrix
10-25-2012, 02:25 PM
To be fair, Ondux, the CPU bottleneck for me is showing up because I have 4x GTX 680 Classified 4GB cards, OC'd to 1250mhz GPU and 7200mhz Memory. When I had just the 2 cards, there were no issues with CPU bottlenecking unless it was just a very poorly optimized game.

Your motherboard can do 16x/16x in dual-card SLI which is really good. My old motherboard, on my i7 2600k computer, would do 16x, or 8x/8x if doing sli. You won't have a bottleneck issue with your pcie slots.

R0berk
10-30-2012, 02:48 PM
I have an i7 920 at 4.3 Ghz with HT on, and I apparently do have a CPU bottleneck with my SLI 670's. In BF3, my FPS will dip to around 70-90 sometimes in really intense areas with GPU usage only at around 50-70%. Other times, FPS will be considerably over 120 and GPU usage at 97-99%. Sometimes makes me really want to upgrade my CPU. :)

HyperMatrix
10-30-2012, 03:55 PM
I have an i7 920 at 4.3 Ghz with HT on, and I apparently do have a CPU bottleneck with my SLI 670's. In BF3, my FPS will dip to around 70-90 sometimes in really intense areas with GPU usage only at around 50-70%. Other times, FPS will be considerably over 120 and GPU usage at 97-99%. Sometimes makes me really want to upgrade my CPU. :)

Yeah it's really sad to see how CPU limited games are. Something about games generally not using more than 30% of your cpu's power because cpu's aren't intended to go full blast at 90-100% for hours. I wish we could SLI some cou's together. :P or just have Jesus give us new new advanced CPU technology.

Ondux
10-31-2012, 09:00 AM
I have an i7 920 at 4.3 Ghz with HT on, and I apparently do have a CPU bottleneck with my SLI 670's. In BF3, my FPS will dip to around 70-90 sometimes in really intense areas with GPU usage only at around 50-70%. Other times, FPS will be considerably over 120 and GPU usage at 97-99%. Sometimes makes me really want to upgrade my CPU. :)

What resolution are you running BF3 at? - Could the dip in performance perhaps be due to memory limitations? - Are you running the 2GB versions or 4 GB versions of the GTX 670's?



Yeah it's really sad to see how CPU limited games are. Something about games generally not using more than 30% of your cpu's power because cpu's aren't intended to go full blast at 90-100% for hours. I wish we could SLI some cou's together. :P or just have Jesus give us new new advanced CPU technology.

Don't you think Jesus already did enough for humanity? xP

whitespider
10-31-2012, 10:50 AM
This is whitespiders review of AMD vs NVIDIA current gen cards.

New card came out. It does not microstutter in SLI. 100/100

Card came out, it does microstutter in CFX. 0/100

Card that does not microstutter wins by 100%. Thankyou. Goodnight.

Random Forum user (on another forum)

"But according to this spreadsheet, the 7970 has a 8fps lead over the 680 in "insert random game name" since the latest driver revision. Bringing the 7970 ahead of the 680"

Whitespider

I.. I.. don't even know what to say. I'm just going to talk gibberish now ok? SDTEwritkwersdfg;sdljkgntnw35TW#$NTK%$KN#$tg.

PS.
I know I have said that I am going to try and be understanding of people that "don't see it", however sometimes I just need to vent. ITS SO GOD DAMN OBVIOUS. STUTTER-STUTTER-STUTTER-STUTTER - How can you not see that? HOW!!!

BlackOctagon
10-31-2012, 04:31 PM
Lol, fair enough but technically that 'review' is of SLI versus Xfire, rather than of the generation of cards

dowant120hz
10-31-2012, 04:33 PM
Kepler (Geforce 6XX) GPUs have built-in "frame rate metering" which causes microstutter in multi-GPU setups to be pretty low.
Its not available for older Geforce or ATI GPUs in general.