The default clocks on the RTX 2080 Ti might not deliver the performance we deserved, but at least the overclocking potential is there. Professional overclocker KINGPIN managed to push the GPU clock to 2.41 GHz and GDDR6 VRAM frequencies to 8.63 GHz, breaking all the records in 3DMark and effectively ending the Titan V supremacy.
https://www.notebookcheck.net/Nvidia-RTX-2080-Ti-overclocked-to-2-4-GHz-on-LN2-ends-Titan-V-hegemony-in-3DMark.333384.0.html