That monitor will need a dual-link DVI cable and a video card with dual-link DVI output to run at native resolution. Geforce 670 should have dual-link DVI port on it. As for cabling just look for DVI cabling has all the pins on it like this
You should be able to find compatible cabling with your favorite etailer (I recommend newegg). I would avoid B&M stores as that they mark-up their A/V cabling by 200% or more.
Ivy Bridge i5-3570K@4.0Ghz, Gigabyte Z77X-UD3H, 2x4GiB of PC-12800, EVGA 660Ti, Corsair CX-600 and Fractal Refined R4 (W). Kentsfield Q6600@3Ghz, HD 4850 2x2GiB PC2-6400, Gigabyte EP45-DS4P, OCZ Modstream 700W, and PC-7B.