NVIDIA GeForce Power Efficiency: From The 6600GT "NV43" To The GTX 750 Ti "Maxwell"
Prey is a similar story to Doom 3 with both being powered by the aging id Tech 4 engine that was great back in the GeForce 6 / 7 days.
The GeForce GTX 750 Ti "Maxwell" was again delivering very significant performance-per-Watt improvements over previous generation GeForce hardware.