4 RX VEGA 56 + 1 RX VEGA 64
I used my VEGA 64 BIOS to flash on VEGA 56.
It works great ... I'll try to tune it more after some tests

https://imgur.com/a/smfUE
43-44 MH/s on Expanse (38.5 on ETH)

Full rig 850W at wall