The very first shares I produced on the equihash blockchain through my new pool that you can if you at with a AMD VEGA FE running a stable 455 h/s <150 watts. I am using the latest 17.Q4 drivers from

Build : BIOSTAR TB85 LGA 1150 Intel B85 SATA 6Gb/s USB 3.0 ATX Motherboard Ballistix Sport 8GB DDR3 1600 250gb SSD locally sourced @ Intel i5 (1150 socket) Rosewill 80mm Low Profile CPU Cooler 6 PowerColor