The OnePlus 9 RT is reportedly arriving on October 15, and leaksters claimed it will have a Snapdragon 870 chipset. This rumor appears to be wrong, as an upcoming OnePlus smartphone, likely the 9 RT, appeared on Geekbench with a Snapdragon 888 chipset and 12 GB RAM. We are confident this is indeed the 2021 flagship chipset, since it is codenamed “lahaina”, while the Snapdragon 870 runs by the name “kona”. Performance-wise, the numbers for a single core and multiple cores are also closer to the Snapdragon 888, which would make the OnePlus 9 RT just a slight update over the OnePlus...
Source: https://www.gsmarena.com/oneplus_9rt_sports_snapdragon_888_chipset_on_geekbench-news-51251.php