I can answer that for my case.

I am getting an average of ~29.2MH/s ETH & 7000MH/s DCR, per RX 580 8GB Nitro+, consuming a little bit less than 160w per gpu

Windows 10 Pro
Radeon™ Software Crimson ReLive Edition 17.11.1
Claymore Dual Miner v.10.1
Modded BIOS

my config:

-esm 0
-asm 1
-etha 0
-estale 0
-mode 0
-dcri 30
-retrydelay 2
-tt 70
-tstop 80
-fanmax 85
-fanmin 15
-cclock 1140
-mclock 2070 (average across all my gpus)
-cvddc 850
-mvddc 850
-platform 1