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Title: Got any tips for getting the last slot working? Post by: HashZilla on October 24, 2016, 02:22:28 AM I have two main boards from different mfr's and each has difficulty filling the last PCIe slot. The last RX470 only works at 300Mhz GPU core and hashes about 4MH/s, and won't take settings from Wattman/Wattool. In both cases, I tried a different card, riser, cable, and the same items work properly in another slot or MB. I tried switching BIOS to PCI Gen2, re-flashing cards, re-installing from bare metal. Any suggestions? Background: ASRock Z97 Anniversary Celeron 1840 Windows 7 64bit Sapphire RX470Nitro 4G USB 3.0 Rev6 risers ASRock Q1900M Celeron J1900 Windows 7 64bit Sapphire RX470Nitro 4G USB 3.0 Rev6 risers Thanks for looking this far. :) Title: Re: Got any tips for getting the last slot working? Post by: adaseb on October 24, 2016, 07:00:24 AM Plug a monitor into one of your RX cards.
If you want to use 6 GPUs, you need to upgrade to WIndows 10. Title: Re: Got any tips for getting the last slot working? Post by: HashZilla on October 24, 2016, 02:34:09 PM I am trying to get only 3 (J1900) or 4 (Z97) GPU's working and I always l have the display connected to the first RX that I install. This has something to do with the MB.
Title: Re: Got any tips for getting the last slot working? Post by: methylminer on October 24, 2016, 03:05:02 PM Plug the monitor into the display getting the low hashrate.
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