Early reviews suggest the Galaxy Note 20 series does indeed have an improved Exynos 990 SoC
The Galaxy Unpacked event confirmed numerous rumors about the Note 10-series successors, including that their access to the Snapdragon 865+ processor rather than the Exynos 990 would be region-dependent, but that the latter would be optimized specifically for these new phablets. A tech correspondent called Chun (or @Boby25846908) now claims to provide evidence that supports this.
This Twitter-based leaker asserts that the Note 20s exhibit a gaming boost of 30 to 40% compared to the older flagship phones. He claims to have confirmed this with other Note 20 owners in Vietnam (one of several markets where Exynos versions are the only option). However, Chun denied that even the new apparent optimizations could make them on par with Snapdragon 865+-powered units.
Nevertheless, it could give some prospective customers less problems with Samsung's de facto two-tier system in effect at the top end of their mobile device offerings. On the other hand, this is just the first piece of feedback on the subject, and may need further validation in many more reviews for confirmation. On that note, stay tuned for our complete assessment of the Galaxy Note 20 and 20 Ultra.