Saphir Nitro + RX580 8G Micron 31.4 Mh/s in HiveOS.
Saphir Nitro + RX580 8G Hynix 30.7 Mh/s in HiveOS.
Saphir Nitro + RX580 8G Samsung 30.5 Mh/s in HiveOS.
On Windows you have to add ~0,5 Mh/s on my result.
all around 100W. Try different timing from Uber Mix on Samsung and no chance at all.
It looks like new Samsung on RX 580 are not the best anymore.
I tried micron, elpida and hynix and micron worked the best for me...don't have card with samsung,
so I took the word from internet about it performing well