AMD is really low level compared to NVIDIA
I bought 2 AMD cards in my life one in 2011 it didn't work I had to wait 1 month of SAV to get a card that worked properly.
and now in 2021 the card shuts down my PC when I run a game...
I'm not sure if it's the power supply or not, but I tested my brother's 3090 for a week and had zero problems, even though it consumes 400 watts. I put the 6900 back in, which consumes a maximum of 370 watts, and the PC shuts down after 10 minutes of playing, or even instantaneously after opening a game.
I'm going to check with LDLC to see if I can get a quick exchange as there is a shortage... it looks bad