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. :
ASUS Mining RX 470 4G Graphics Card | CryptoSlate
RX470 4 gb 65,47mh/s : r/erg_miners
AMD Radeon RX 470 Ethereum hashrate - Crypto Mining Blog
RX 470 4GB low hashrates across algorithms : r/gpumining