Hey. I have a rig with six rx570 4gb cards. I'm trying to mine Ethereum. All cards show good hash rates. But card # 0 always shows a hash rate of 0-5. I can swap video cards. I can turn off one, two, three or more video cards. But always card # 0 gives a very small hash rate.
I turn off 5 video cards. There is only one video card that works. She is number 0 and has a hash rate of 0-4. Why? Help me please. Sorry for my English.
Monitor connected to 1st card? What Windows and drivers versions?
This does not depend on which video card the monitor is connected to. The monitor emulator or the monitor itself was connected to different cards. The situation is the same when the monitor is not connected to the rig. Radeon Software Crimson ReLive Edition Beta for Blockchain Compute Driver Version 17.30.1029. Windows 10 pro
Looks like Windows uses some amount of video memory on 1st videocard anyway with emulator or not. It's need to have integrated videocard or 1st card with 6 or 8Gb.
Try other drivers. F.e. 19.7.5.