Just thought I would share my benchmarking of the R9 nano.
All power measurements were done at the wall to be 100% accurate.
Benchmarks were done with Claymore ZEC - v8.0 (-i 4)
Stock:
1 gpu: ZEC: 272 h/s Watts: 200w
-100mV ROM
1 gpu: ZEC: 211 h/s Watts: 91w
-125mV ROM
1 gpu: ZEC: 217 h/s Watts: 90w
you are missing a -100 core undervolt benchmark for stock
I couldn't do -100 undervolt on stock. The most it will let me undervolt is 75 and it made very little difference.