References to an unknown AMD GPU, AMD 66AF:F1, have popped up in the CompuBench benchmark site leading to speculation that this could be one of the Navi SKUs. From the initial numbers, we get to see that this GPU offers improved numbers in several memory-intensive compute tests over the Vega 56 but still trails behind the Vega 64. However, this GPU does seem to have significant leads over the Vega 64 when it comes to graphics performance.
https://www.notebookcheck.net/Could-this-be-Navi-New-AMD-66AF-F1-GPU-pops-up-on-CompuBench-offers-better-graphics-but-lower-compute-performance-than-the-Vega-64.413728.0.html
Quote from: Scott on March 10, 2019, 15:42:51
The Radeon VII has the same ID 0x66AF1002.
Yeah but the perf. numbers are significantly different. So either it is just a new Vega 20 variant or some Navi prototype. It is just speculation for now, though.