While many modern games don't allow high end graphics cards to really stretch their legs, multi monitor configurations and stereoscopic 3D tend to push even bleeding edge GPUs to their breaking point. Many have argued that a higher amount of memory bandwidth could unlock additional performance in these situations and we're about to put this claim to the test. In this article, we take a look at GTX 580 and GTX 570 cards with custom memory configurations to see if they can provide higher framerates in some of the most demanding setups available.