Questions about CoD on 1440x2560 displays

[SharpeXB]

I’m considering upgrading to a 1440x2560 monitor, questions I have are:
Graphics card. Is there a card or combination of them (SLI) that can run CoD at this resolution and full settings? I’m sure I’d need SLI, does CoD support this?
A solution for running a single card might be to just run the games at 1920x1080 and let the monitor upscale them. That might by itself look pretty good. Obviously native output 1440x2560 would be better, just it would be more demanding.
I suppose if you’re running high resolutions that anti-aliasing is no longer needed or very little. One reason I'm looking for this resolution is perhaps it will solve the lack of AA in the sim.
The monitor I’m considering is the Asus PB278Q, compared to Samsung and Dell it’s got the best price and a higher refresh rate.

These are my system specs:
850 Watt Corsair Power Supply – Nvidia SLI Certified
Asus P8Z77-V Intel Z77 based chipset, ATX Motherboard
Intel Core i7-3770K IvyBridge processor, quad 3.50GHz cores, Hyperclocked to 4.7GHz
Asetek Liquid Cooling System
8GB DDR3-1600MHz Quad Channel Memory
2048mb eVGA NVIDIA GTX670 GDDR5 video card
120gb Intel 520 Series MLC Solid State Drive
1TB 7200rpm SATA 300 w/NCQ
Windows 7 Home Premium 64-bit w/ SP1