Hey, new miner also. Mining for 3 weeks allready have 11 sapphire nitro special edition 8gb. Stable 30.2 MH without modding bios. Dont have power meter, but seems my cards taken lot of electricify on globalpowertune 5. Trying to set 3. Stable for few hours now. How much mh i can reach if i flash bios? I'm useing core 1250, mem 2290 on ethos
You need a powermeter to determine your total consumption on the wall. It is not expensive.
I got 13 RX580 with mobo, SSD, monitor, etc, power draw from the wall around 1700W so I suspect 1 card will be around 110W on the wall... Without modded VBios this can jump up to 180 Watt and your cards will get HOT!