XFX
Radeon RX 480 GTR Black Edition 8192MB GDDR5 PCI-Express Graphics Card with Backplate

This is a good card

I bought this card 2 weeks ago. As soon as I installed it the fans were loud after a while in games. This is due to 2 reasons:

1. the factory bios thermal configuration
2. my case wasn't very well ventilated

Most important of the two is the latter though, so if you want the card's fans to stay quiet, make sure that you have good positive air case ventilation (a side panel quiet fan that pushes some air onto the card easily did the trick for me). I currently have 2 intake and 2 exhaust fans and it's quiet.

I had already fired an RMA for the card but as soon as I found those settings I was convinced that my case ventilation was the culprit and it got easily fixed, so I kept it.

What also helps in this regard is undervolting the card from 1150mv to 1120mv (could possibly do even lower - try it) in the highest clock power state.

The fans stay quiet up to around 2100 rpm, and bearable up to 2600 rpm, so I've set up my fan profile in Wattman like this:

Speed: min-1700, target-2300

Temperature: max-85, target-73 (increase power limit to 15-20% if you'd expect the card to keep the factory overclocked 1338mhz as advertised constantly without core throttling).

Don't be fooled by other RX 480 OC cards that claim that are more quiet than this one, the problem will be the similar with fan noise if you do not have decent case ventilation.

So, in short, push some air into your case and modify the Fan profile settings through Wattman or Trixx, even undervolt it and you will be a happy gamer like myself :)

I haven't tried to overclock the core even further, but the memory easily goes to 2150mhz at 1020mv.

GPU-z reports an ASIC quality of 81.4.