ASrock H81 Pro BTC - 6 GPU Running 4 MH/s on ETH

[Kompik]

Hello,

I have been having problem with one rig of mine and cant seem to find answer anywhere. I have ASrock H81 Pro BTC, with 6x 470 Asus Strix 4GB cards and the last card always runs 4,5 MH/S on Ethereum while all other run 28,5 MH/s fine. All cards have flashed bios with modified memory timing. I would also like to note that it is not the card - I tried to switch them, I also tried to switch risers and nothing works. It seems that it is the pcie 16x slot that is giving me problems.

Anyone knows how to solve this issue? Thanks very much!

Sorry if this is a noob question, I was always Nvidia guy and this is my first Radeon Rig

[1714782324]

1714782324

[1714782324]

1714782324

[boatznhoes]

How many watts is your power supply? Are your risers powered?

[maomaopop]

It could be your AMD drivers. What version of Radeon driver are you using?

[xxcsu]

plug your monitor into that problematic card , or use any dummy plug

http://www.ebay.com/itm/HDMI-dummy-plug-4K-DDC-E-EDID-emulator-fake-display-headless-slim-DVI-/161265341755

[Wefud]

Increase the virtual memory.

[Kompik]

Reset your card after running the miner in MSI afterburner or change memory number to something else.
Mine does the same everytime. Clicking reset after miner starts or changing the memory number works for me.

Thanks very much, it seems that it helped!