RX480 with mod. bios speed up to ~800 (@1950 mem) 850 (@2050 mem) H\S (2050 on my card very unstable - is 4Gb model, low speed memory (1750 stock). On 8Gb models stock is 2000Mhz (overclock up to 2200 + modding timings), It should be fastest.
Print please your cofig file for miner 9.6
I use -a 4 option only. Important in mining Cryptonote (in the case of Ethereum too) - memory transfer rate.
Need to do the modification of memory timings in the card BIOS.
Using what powerdraw?
~115W GPU:1303(1120mV), MEM:1950@(975mV)