Until today, the entire Dimensity series was fabbed on a 7nm process, but that just changed – the Dimensity 1200 and 1100 are MediaTek’s first 6nm chipsets. And they are the first to use the Cortex-A78 core. The two are based on the same raw hardware, but target slightly different bins. The Dimensity 1200 is the premium offering. Its CPU has a 1+3+4 configuration with a A78 core is running at 3.0GHz, plus three more A78 cores at 2.6GHz and the usual quartet of power-efficient A55 cores running at 2.0GHz. For comparison, the Dimensity 1000+ used an older A77 core that topped out at...
Source: https://www.gsmarena.com/mediatek_unveils_the_dimensity_1200_and_1100__a_pair_of_6nm_chipsets_with_cortexa78_cpu-news-47290.php