Ok, I keep getting different answers from different people. I know the GTX 680 runs with less power, the GTX 590 does better with shaders... My friend found some benchmarks saying that the GTX 680 did better framerates occasionally. And, on top of that, is the GTX 690 supposed to surpass both of them in all fields of performance? Let me hear all your thoughts! I'd be willing to shell out a few hundred extra for the GTX 690 if its performance matches the price.