Hi,
I'm planning on upgrading the graphic card in my Aurora R9 (upgrading from Nvidia GTX(R) 1660 6GB)
At first I was only looking at other Nvidia cards, 2000/3000 series, however these are either unavailable or sold at ridiculous prices.

Is anyone using AMD's cards in aurora and can recommend something?

And are there any factors limiting the graphic card choice? Up till now I was only aware of size limits- 10.5/10.7'' max length. (Currently using an overkill 850W PSU, so that shouldn't be a problem when upgrading GPU).