I have a MSI GTX 560 ti Twin Frozr ii 2gig,,, and am looking at buying another 560 ti 2gig card to run SLI,, However, the only Manufacturer that has GTX 560 ti 2gig models is EVGA,,,, MY question is,,,, Can I run SLI with an EVGA and an MSI GTX 560 ti 2gig???????