I know the XFX GTR is a good card but I do feel people are getting a bit carried away with the reputation this card seems to garner. There are at least two versions of this card:
GTR xxx edition clocks: 1120 boosts to 1288
GTR Black edition clocks 1120 boosts to 1338
There is also a reference cooler RX 480 black edition with the higher boost clock, so theres a choice of three really.
Both of these GTR cards have custom coolers that look the same, but have different boost clocks, so I'd "assume" that the black edition is gonna overclock higher than the vanilla xxx due to it's higher boost clock. Maybe, just maybe, the black edition is the one that appears to get the really high clocks, 1400mhz plus on the core. When listening to online reviews, I've always tried to see which version GTR the reviewer is using and as far as I can see, none of them mention if the card is a black edition or not, nor wether they've increased core voltage or not (there might a few vids stating if they over volted or not but I haven't seen them).
Now, in no way knocking these cards, I have a GTR myself (non Black versh) that I can bench in heaven quite well at 1400mhz, (if I mess around with Sapphire Trix and give it +100 Mv and get the fan 100%) which is a 112mhz overclock above boost figure of 1288mhz so its none too shabby. Anything above that and its crashville. That is nowhere near the 1450mhz on stock volts that I've seen posted on these vids.
So..I just think people need to bit more aware of the versions of these GTR cards that they may or may not be thinking of getting. As I said, I really rate mine as I find it plays really well at 1440p at stock (I don't play anything too demanding atm)
(they look to be powerful enough to run that resolution with ease)
Until I gave her a go on my Vive - she loves the VR 
There is always hope 
