Looks like AMD's RX 590 is the first ever GPU to be made on a prime nanometer node
... This, according to AMD in response to a question by TechPowerUp ...
https://www.techpowerup.com/249669/samsung-amds-second-foundry-partner-for-polaris-30
... This, according to AMD in response to a question by TechPowerUp ...
https://www.techpowerup.com/249669/samsung-amds-second-foundry-partner-for-polaris-30