Good news i done it 
Now what about OC settings for my Sapphire RX 580 Nitro+ rig?
What should be those settings?
Core Clock (Mhz):
Core State (Index):
Core Voltage (mV):
Memory Clock (Mhz):
Mem State (Index):
Now what about OC settings for my Sapphire RX 580 Nitro+ rig?
What should be those settings?
Core Clock (Mhz):
Core State (Index):
Core Voltage (mV):
Memory Clock (Mhz):
Mem State (Index):
Try this :
Core Clock (Mhz): 1270
Core State (Index): 3
Core Voltage (mV): 930~940
Memory Clock (Mhz): 300 (or 600 if you notice some hashdrop)
Mem State (Index): leave empty