I am using two different rigs both based on the 19 card Asus Mining board, G3930 Processor, 4GB ram and 6 MSI 580 8GB cards running Claymore V10. Both are a little different in problem. On Rig one, 5 cards are running at 30 Mh nicely but the extra one starts at 30 Mh but then rolls down to 15 Mh and rebooting does not help. It is the GPU3 and whatever card that is in the system. Changing cards, risers etc always gives what is identified as GPU3 the problem. On rig 2 all of them are running at 27.5 Mh but the first GPU0 always runs at 22 Mh. If you swap out video cards the next card then runs at 22 Mh. It is not the card on either case.
I take off video to my screen from the onboard video, not plugging into any one card. If I try to plug an HDMI dongle into the problem card it will roll down to 0 Mh rate.
Does anyone know why this is happening. It does not follow the card, riser or anything else. If you have a config that addresses this problem, can you paste it in this thread. Does anyone have a link that would show the GPU numbering for that Asus Motherboard so I can figure out which slot is GPU0 or GPU3. I know it is not as simple as the first slot = GPU0.
Size of the card in the friend's crew who is mining the Eth and Monero as of now doing with the Nvidia 1070 8 GB cards only. If we find the hash power and over clock speed same in the different size of the card means how it works faster to mine the blocks like the 8 cards bro.
I have not tried the change of connection with the HDMI plug ins. I have got made the complete rig set up with the 6 cards so really cannot say why your hash rate turns to zero.
Check the network and graphics technology to know more about it.