Gigabyte 990fxa-ud5 v3.0 w/latest bios
Kingston hyperX 16gb(4*4gb) 1600mhz
FX - 8320e
Crucial ssd 256gb
Windows 10 pro 64bit
1 x msi rx580 8gb via x16 to x16 cable
4 x msi rx470 4gb via x1 to x16 usb v006(? The one with the 6pin power) risers
1200 watt silent gold coolermaster (powers risers and 470s)
650 watt evga gold (only powers 580, board and had)
Latest amd blockchain drivers

Shorting yes the a1 and b17. It started to smell so I pulled the plug. The small board was burnt but I had another so no loss there.