I have both RX 580 MSI Armor X OC and RX 580 Gigabyte AORUS.
My sweat spot is with TeamRedMiner 0.8.0
core 1150@825mV
mem 2150@800mV
62-64W reported in HiveOS (probably something like 110W at wall)
31.15 MH/s per GPU
I'm glad with it, because of the low power and low temp for a really nice Hashrate
No strap and/or rxboost settings?
Thanks
Rxboost for RX 570 and 580 isn't available in all mining softwares out there, you can only see this option available in hiveOS, smOS and phoenix miner, you will need to add the rxboost in phoenix miner manually, do some google search on that it not hard