My current build is:
CPU: i7 3770K
Video Card: GTX 780
Motherboard: Maximus V Gene
CPU Cooler: H100i
SSD: Neutron 120GB
SSD: Neutron 480GB
Power Supply: HX850
Case: 550D
RAM: Vengeance 16GB
if the 750ti is any indication, the 800 series will be pretty sweet compared to current offerings as far as efficiency means, not sure how much more powerful they're going to aim above the 700 series cards.