The Exynos 2100 will power the Galaxy S21 series in Europe and South Korea, according to a new report. Qualcomm's Snapdragon 888 will be making its way to the USA, possibly heading the American variants a performance advantage over their European and South Korean siblings. The Galaxy S21 Ultra will be available with up to 16 GB of RAM too, unlike the Galaxy S21 or Galaxy S21+.
https://www.notebookcheck.net/Samsung-to-bestow-the-Galaxy-S21-series-with-the-Exynos-2100-in-Europe-and-South-Korea-16-GB-of-RAM-headed-to-the-Galaxy-S21-Ultra.509513.0.html