A leaker has found that Samsung's upcoming flagship Exynos 2100 runs ARM's newest Cortex-X1 super core. It confirms an earlier leak, which stated that the chip would feature one ultra-high-performance, three performance, and four efficiency cores. The 5nm chip is expected to make its debut alongside the Galaxy S21 series in 2012.
https://www.notebookcheck.net/Leak-confirms-that-the-Samsung-Exynos-2100-will-run-ARM-s-Cortex-X1-cores.497579.0.html