I suggest you avoid buying the RX 5700 XT, even the custom AIB models. Even though AMD claimed this behavior to be normal, I have my doubts regarding this new NAVI architecture. Get a more power efficient card from NVIDIA.
This is just my own opinion. You can buy the card if you wish.
According to them:
AMD says that temperatures of up to 110°C with its RX 5700-series graphics cards are “expected and within spec” for typical gaming usage. The company’s latest GPUs, utilising the RDNA architecture, are known to crank out some heat, but according to AMD’s latest community update that’s within the safe operating range of the graphics card and nothing to worry about.
But there are gamers who are still complaining about...