The Exynos 990, the flagship 5G-enabled mobile chipset Samsung launched a few weeks ago, is the Exynos 9830 that will power the Galaxy S11. The part number for the Exynos 990 is S5E9830, as seen on Samsung's website, which is how we have learned that the Exynos 990 is what should have been the Exynos 9830.
Some of you might be wondering why there is confusion over what Exynos chip will power the Galaxy S11. The confusion came purely from the fact that Samsung is using Exynos 9830 for the Exynos 990 internally, like in the code for the Android 10 beta for the Galaxy S10. Previously, the part/model numbers for Exynos chips usually matched their consumer-facing names, but Samsung is clearly switching things up for next year. For example, the Exynos 9820 and Exynos 9825, which power the Galaxy S10 and Galaxy Note 10 respectively, have part numbers S5E9820 and S5E9825.
The other SoC that will power the Galaxy S11 lineup will be the Snapdragon 865 from Qualcomm. The Snapdragon 865 is expected to be made official in early December, with many features that are similar to the Exynos 990, such as an integrated 5G modem, support for 100MP+ cameras, and UFS 3.0 storage. It will be built on a 7nm EUV manufacturing process by Samsung, same as the Exynos 990. As usual, only select markets – such as the US, Canada, China, and Brazil – are likely to get the Snapdragon variant of the Galaxy S11.