IIRC it's possible to flash a Vega 56 with Vega 64 firmware - I don't know the details because when Vega proved to be rather underwhelming for gaming I lost interest in it ( it's extremely good for compute solutions, I just don't need any of that right now ), but I remember that tidbit. If you're going SLI/Crossfire make sure you have enough PCIE lanes to cope with that & any other bits plugged into the PCIE bus ( onboard stuff can count there ).
I'm probably going to end up with a nvidia 2080 even with freesync screens to fill in the gap between now and AMD producing something decent again.
I'm probably going to end up with a nvidia 2080 even with freesync screens to fill in the gap between now and AMD producing something decent again.