I was able to fit a Powercolor Red Dragon Vega 56 into my NCase M1! It's a super tight fit length wise (pic). The stock cooler was way too tall, so I had to remove it. I also had to buy a couple of 90 degree bent back PCI-E extension cables so I could actually close the case (pic). So now it's just the card, backplate and heatsink remaining. I have 2x Noctua F12's at the bottom of the case.
Here's a side pic of the whole thing.
Here's a side pic of the whole thing.
