https://wccftech.com/sapphire-radeon-rx-570-duo-dual-amd-polaris-mining-graphics-card-pictured/

Sapphire has released a new mining graphics card that features two Radeon RX 570 GPUs based on the AMD Polaris architecture. The graphics card is designed for mining but it also features a display output which means that the card can be used as a regular graphics card.

While AMD Polaris is a relatively old architecture by now, it still can be repurposed as a decent mining option. This particular variant looks brand new which means that Sapphire might have older Polaris GPUs still lying around in their inventory and selling them as mining graphics cards such as the one we are looking at right now.