Undervolting is the solution. By reducing the voltage supplied to the GPU core, you maintain (or sometimes increase) performance while drastically lowering temperatures and noise levels.
Unlocking Efficiency: Do 6800XT Undervolt Settings Work? (2026 Guide) 6800xt undervolt settings work
This method manually lowers the voltage limit while keeping high frequencies. This is how you get better performance and lower temps. Undervolting is the solution