Added 5th card generates only 4,5MH/s on eth

[Defibriliatorius]

So I ran into problem with mining speed when using one particular PCIe slot. Windows 10 detect all 5 cards all 5 mines but one of them mines ~4.5MH/s while others 24+. And in Crimson drivers under System tab one GPU reports that Bus Type Not Available (or Current Bus Settings Not Available - can't remember which one). Managed to figure out that if I disconnect card from PCIEX1_1 then 4 cards work well. Tried to connect GPU only to this slot and it didn't post and ends with beeps that means no gpu detected. What's wrong with that port? Looked at MB manual but didn't find anything helpful. GPUs used RX480/570. It can't be Claymores miner right? By the way is it worth going PCI to PCIe adapters, or better try PCIe splitter to get 8 GPU connected or it's not possible on that board? Just want to use 1200W Platinum PSU at full.
MB manual: http://download1.gigabyte.eu/Files/Manual/motherboard_manual-ga-ma790fxt-ud5p_e.pdf

[Defibriliatorius]

Bump

[Apneal]

Don't bump your own damn threads.

Get rid of Crimson drivers and install older drivers. Look for the v16 driver for RX5xx hack on these forums, v16 drivers tend to work well.

[Defibriliatorius]

Don't bump your own damn threads.

Get rid of Crimson drivers and install older drivers. Look for the v16 driver for RX5xx hack on these forums, v16 drivers tend to work well.

I installed newest Crimson package and RX570 use newest, but for RX480's i installed 16.9.1 divers because of modded RX480 bios. All cards on one rig tho. 16.9.1 doesn't recognise 570's. And even when 480's with 16.9.1 that PCIE slot gives only 4,5MH/s.

[Vann]

Don't bump your own damn threads.

Get rid of Crimson drivers and install older drivers. Look for the v16 driver for RX5xx hack on these forums, v16 drivers tend to work well.

I installed newest Crimson package and RX570 use newest, but for RX480's i installed 16.9.1 divers because of modded RX480 bios. All cards on one rig tho. 16.9.1 doesn't recognise 570's. And even when 480's with 16.9.1 that PCIE slot gives only 4,5MH/s.

I have a rig with mixed RX 4XX/5XX cards. The RX 5XX cards are only supported by drivers 17.4.X and up. Uninstall the drivers in safe mode using DDU and then install the latest driver from the AMD website. After you install the driver and any time you update the drivers, you need to patch the signature check if you have cards with a modded Bios.

https://www.youtube.com/watch?v=IAiScXPisAY

[Defibriliatorius]

Partially solved problem. Just installed GTX 1060 into a fifth slot and it mines at full speed. You guys were right, it looks like it was issues with drivers. But for now it doesn't matter as I'm happy with 4xAMD + 1 Nvidia Card in rig. I wonder if I could get 8 GPUs working on this motherboard via PCIe splitters. Actualy it is my goal to run one rig with 8 GPUs.