An XDA Developers user successfully overclocked their Snapdragon 865's Adreno 650 GPU and got it to outperform the Snapdragon 888's Adreno 660. The test involved a Xiaomi Mi 10T and an Asus ROG Phone 5 and included several real-world and synthetic benchmarks.
https://www.notebookcheck.net/Overclocked-Adreno-650-outperforms-the-Snapdragon-888-s-Adreno-660-in-Genshin-Impact-and-other-benchmarks.591774.0.html