As we learned from my introduction to the GTX 750 Ti, first-generation Maxwell cards exhibit a 35% peak performance boost per core and twice the performance per watt. They also blow Kepler hash rates out of the water. Based on what I’m seeing with the 750 Ti, Nvidia is poised to embarrass AMD in the performance-per-watt race — and that’s a substantial factor when you’re paying the inflated energy bills caused by mining.