Vega 20 will be one of the first 7nm GPU products that AMD introduces, and it will be [primarily] used in Radeon Instinct graphics accelerators that are dedicated for machine learning tasks. Radeon Instinct cards traditionally don't include any external display connectors, which leads further credence to this card being an engineering sample with actual HDMI/DisplayPort connectors.
With respect to performance, the Vega 20 is nearly a perfect match for the GeForce GTX 1080 in all listed benchmarks (2560x1440 and 3840x2160 using Light, Standard, and High Quality settings). The Vega 20 never manages to top the GeForce GTX 1080, but it does stay within striking distance even at 3840x2160/High Quality.
From a performance standpoint, not much seems to have changed with respect to Radeon RX Vega family that was released last year. However, the big advantage of Vega 20 over those 14nm Vega 10 cards will be in reduced power consumption, which will be highly beneficial for the Radeon Instinct’s intended market in the enterprise sector.
In addition to the shift to the more power efficient 7nm node, Vega 20 is also expected to be paired with up to 32GB of HBM2 memory. While AMD has only confirmed that Vega 20 will be used in the Radeon Instinct family (there’s a possibility that Radeon Pro or Radeon RX variants could show up), what gamers will really want to be on the lookout for is the 7nm Navi architecture. This will be a mainstream gaming card that is value priced with GeForce GTX 1080-level performance and could be a real winner in the marketplace.