Hmm, the Samsung S27A950D is specifically designed for AMD cards. However, while I think it's an amazing monitor for the price when gaming at 120Hz in 2D, I can't say I found its 3D mode very inspiring. First of all, 3D gobbles up your frame rate (I'm on an overclocked 7970) and second of all there was some ghosting and crosstalk.
Not sure if other monitors do a better job, as this was the only time I gamed in 3D. However, unless you're running 2 7970s my advice is to just forget 3D altogether (unless of course you've already seen it and like it)