I just finished BUILDING a rig with 6xSapphire Nitro (non plus) OC RX 480 8GB with Micron memory.. my first thoughts was that it was nothing i can do and the best thing is to send them back.. BUT after some researches i came up with something nice. The other components can be found here: https://1stminingrig.com/best-mining-rig-hardware-mine-2017/
If you had different driver versions installed instead on 16.9.1, use Display Driver Uninstaller to uninstall the current AMD Driver (use safe mode option) and then install the 16.9.1 one
Make sure you stop Sapphire Trixx, MSI Afterburner, Watttool or anything else related to overclock.. to start on windows boot, also reset to defaults clocks settings
Shutdown the rig and connect only one GPU (remove the gpus from PCI-e slots and leave only one connected with the 16 pci-e slot), we will be doing one gpu at a time, highly recommended
Power on the rig
2Backup Original Bios
Extract atiflash to C:\atiflash
Run ATIWinflash.exe as administrator
Click Save button to backup the bios, give it a name like RX4808GBOCnonplusOriginal.rom, also you can create a separate folder for each card using the product numer like “14523” (check bottom of GPU and Box), in this way you will know from where to get the bios for each card
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