Quote from: Amazing on February 08, 2016, 03:42:27 AM

I want to give big big thanks to Ocminer and all the other helpful users on this forum.

I am wondering what motherboards people are using to build their rigs with, and how many gpus you are running off of one board. I have an issue with an ASRock 970 Extreme 4 board where I can't get more than 3 opencl units recognized.

Code:

eth --list-devices

always returns 3 devices regardless of how I rearrange the cards. Huh

This is the brand I chose as well. I have 4 of the Extreme 3 boards and 2 of the Extreme 4 boards. One of the Extreme 4 boards required jumpers to get it to recognize the 4th GPU. Don't ask me why, I have no idea. All I know is that it worked. Why the other MB didn't need I have no idea.

Also, the order that you put the cards in matters.

For each card I recommend a full shut down and reboot before inserting the next card.

The PCI slot second from the left is GPU 0. Do it first.
Next is the PCI slot immediately to it's left.
Then do the far right one.
Finally the one to it's immediate left.

I never could get the 5th slot to work for me, but frankly I just gave up.