Would a GTX 690 be enough for 5760x1080 120Hz?

I currently own a GTX 690 and a BenQ XL2420TX. It is 1920x1080 and 120Hz. I had some other low-end monitors that are all 24", 1080p, and 60Hz. I hooked those to demo what surround would be like, and I really enjoyed it (didn't try many games on it), but I also really enjoy 120Hz. If a 690 is not enough, I could sell my 690 on craigslist and get 2x 4GB GTX 670s if that would be a good idea. May I add that I would like to get decent frames on high-ultra if possible. Some of the games I play are somewhat high-end, like Battlefield 3, Grand Theft Auto IV + iCEhancer, Minecraft on max settings (extreme render, AA, etc.) I would most likely NOT turn on AA very high because of the massive resolution. I consider decent to be over 100 most of the time. Is this a stretch, or would this be possible?

i think 3 670s are around the same performace as a 690. maybe get 2 680 instead?

In the benchmarks I have seen, the 670 is extremely close to a 680. In this benchmark here, a 670 got a 5340, and a 680 got a 5626.

you might aswell go for the 670 sli cheaper and if overclocking get a twinfrozor edition.

I will get a good cooling card, just to benefit. Would an Asus Direct CU II 4GB be good in SLI, or should I get an EVGA basic one with just one blower fan? Also, if I overclock to something like 1300MHz, would that be enough to rock 5760x1080 and still get decent frames?

you should be able to sli a asus direct cu ii. dont get stock blower fans they always run hot. i dont think you will be able to overclock it to 1300mhz.

Don't use that as a source as the results are unaccurate and are averages through time.

look at the 7970 vs the 680, the 7970 for gaming right now is the better card winning 8/10 times, but that doesn't show it.

High end coolers are allowing people to OC to 1200mhz i doubt you're gonna get past 1234mhz, unless you win the silicon lottery

If you are thinking about doing a sli/crossfire setup I would go with an nvidia card over an amd card pretty much any day. You should check out the PC perspective articles on frame rating showing why I reccomend this setup personally. 

If crossfire was useless, as they blatantly conclude in their 680 vs 7970 article, people wouldn't buy two AMD cards. But they do.

Also, the tool (FCAT) was made by Nvidia, specifically for reviewers to look at frame latency between manufacturors. The methodology behind the tool checks out, but Nvidia is well known (or at least should be well known) for pulling secret underhanded crap with their GPUs all the time (see: everything about PhysX), and that tool has every motivation to fudge some numbers where appropriate. Not saying it does fudge numbers, or that AMD doesn't have latency problems, but I'd much rather have an open source tool doing that measurement than one developed by Nvidia.

More on topic, I don't think any GPU setup out there is worth what it would cost to switch away from a 690. I mean... even if anything can do that resolution at 120hz faster than a 690, I highly doubt it would be much difference.

go titan..