First of all, Tianguet does not have 990, the relatively new is Tianguet 900, which is a newly released mobile phone processor of MTK recently, positioning the mid-end, should be a 6nm process, while Huawei Kirin 990 is a high-end mobile phone processor released by Huawei in 2019, using a 7nm process. In terms of current comparison, basically Tianguet 900 can be compared with Huawei's Kirin 985 processor, which is slightly weaker than the Kirin 990 processor.
Of course Huawei 990 is good! Kirin 990 still uses 7nm process, compared with the previous generation of Hesilis Kirin 980 increased by about 10%, built-in Balon 5000 baseband, support for 5G network CPU, using two core plus two core plus four small nuclear energy efficiency architecture compared to Kirin 980 more, six cores increased by 6%, while energy efficiency increased by 20%
Kirin 990 is better because the best of Huawei's high-end chips are used in high-end machines such as Huawei mate30 series, Huawei p40 series, Huawei mateX and XS series
It must be Kirin 990, which is the flagship processor of Kirin, Tianji 990 is only the mid-end processor, and the heat is serious.