Hello!
I was reading the last 40 pages (i've been out a while) and I was wondering, why is there is so little info about power efficiency?.
isn't the most important factor in mining nowadays?, specially today that is barely profitable?
power here is getting expensive fast, and unless i found the most efficient way, i will be out of business soon!.

around august I decide to sell all my GTX 970 G1's not because they weren't fast, but because of power consumption was ridiculous when compared with the rigs using 750ti.

even now, I have several 7950 but don't use them because, again, power efficiency.

my rigs (all 750Ti) is the final result after so many buy/try/sel/buy/try/sel cycles until i finally found the most power efficient rigs possible (not sure if this is true today because of the new r9 nano card, would love to see comment about this)

so, here is my data, I will love to know about yours and compare notes!.

cards are almost all Gigabyte 750Ti (and couple of evga's ftw), stock clocks, lubuntu64 cuda 6.5 DRV 346.59 ccminer 1.5.74  (the best one so far for this config) no hard drives, os runs from 16gb flash usb sticks.

QUARK:  86.4Kh/Watt    (average card power consumption, at the wall, including %computer: 70W)
LYRA2V2:  71.6Kh/Watt  (average card power consumption, at the wall, including %computer: 60W)

PSU used, dual conversion, 80 Plus bronze at 40% load.
what is yours?.