Nvidia is issuing Maxwell as 28nm before 20nm. This is really weird and they must be having serious yield issues at TSMC.
So my concern was legit!
Here's a look at Maxwell:http://www.anandtech.com/show/7764/the- ... -maxwell/2
"However NVIDIA tells us that overall they’ve been able to outright double their performance-per-watt on Maxwell versus Kepler, which is nothing short of amazing given the fact that all of this is being done on the same 28nm process as Kepler."
I'll also mention that Titanfall is supposed to run better on the GTX 750 Ti (which is not a Maxwell card) than on the Xbox One, according to the developer.