Those RX 470 cards just won't die. Finally able to tune for power efficiency and decent hash rate. Running eight of these bad boys in an eBay enclosure. Mining ETC of course. :
Best BIOS ROM for Sapphire RX 470 8GB Mining Edition with Samsung Memory 29 – 30 MH/s | Bitcoin Insider
Ergo with GPU 4GB RAM - AMD Cards - Forum and Knowledge Base A place where you can find answers to your questions | Hive OS