Quote from: Brucelats on June 20, 2017, 09:23:10 AM

Quote from: Nexillus on June 19, 2017, 11:45:47 PM

Quote from: fullzero on June 19, 2017, 11:34:02 PM

Quote from: WarwickNZ on June 19, 2017, 11:22:26 PM

Quote from: Nexillus on June 19, 2017, 11:08:58 PM

Anyone have any suggestions to this problem, I am all ears.

I have one of my rigs which uses a Asus Prim z270-a when I put the 6th GPU in it will not POST to the bios screen therefore not start up.

From troubleshooting it only happens if I have 2 GPUs plugged into the X16 slots, if I only have one it works fine.

I have changed the BIOS to the recommend from the thread here for the z270-a and set it all to GEN2.

Any other suggestions?

There were 4 Gen2 settings I needed to change, did you change them all? Could be an issue running 2 on the board with 7 or more, i've only tested with 1 on the board +6 risers or all risers. Check for faulty riser cables too, that slowed up a friend of mine getting 7 going on this board.

This was my thought as well; WarwickNZ.

I'm not sure if you can use 2x GPUs direct on the mobo + 5x with risers with this mobo.

When using a GPU directly more pcie lanes / pcie bandwidth is used. This may result in insufficient bandwidth on one of the cards to enable normal operation.

While using a card directly I would change the pcie bandwidth to gen2 for all cards. Then when you get your risers, I would change it back to auto.

As WarwickNZ indicated; there are multiple pcie bandwidth related settings in the bios. There may also be an SLI setting that needs to be disabled as well.

I should probably rephrase. I have all 6 GPUs on risers, the only time it does not post is when I have 2 of the x16 slots with the risers in them. I will double check and make sure they are all the same gen type. I had it on auto first but when I did, it wouldn't even boot past one card. I'm to the point I may just reset the MB bios via cmos and start fresh.

Have u managed to get it work?

Going to be trying it again today. I will get back with you.