Why would the registry files be any different than the stock blower style cooler? It's the exact same card.. It baffles me how people think changing the outside cooler turns it into a completely different card. If the core and memory are the same (from same manufacturer), the card will perform exactly the same (apart from better thermals of course)...
FWIW, while I don't know anything about the Nitro, the MSI Air Boost (which looks the same as the reference cards) does not perform the same. It seems to have Hynix memory (according to GPU-Z), and I was never able to get it to work even remotely well.
Well yes, I believe all Vega 56s have hynix while the 64s have samsung memory. That's the reason why I buy 64s even though the 56s are cheaper. From my experience samsung memory always seems more robust and has fewer crashes. It's probably also why the 56 even with a 64 bios hashes a bit less than the 64. So basically my point remains.. We weren't even talking about the 56s.