it does’nt… it is a hint about a possible reason in a case where the impl catched a problem, thus simple a text.
I have a 2080TI with default factory OC and never seen that popup.
So far I remember, does the ln2 bios of that 2000$ card ( year 2019 ) increase the powerlimit extremly ( 250 → 520W or so ). Also the temp-limit are disabled. And also if we assume the watercooling system can handle 500W, exists other components on the system, like the PSU.
And let us remember… a high OC of a 2080TI is already 1800 / 7000 ( whats similar to the factory default of that card ). So, I not wonder about any kind of problems with that OC… the CPU OC I ignore for now.
If you want to follow a more up2date topic, instead these 2years old one , which have a solution marker, you can join into : Warning: Your graphics device has encountered a problem
In that topic we spoke about some possible reasons why some users get that popup , where OC is number one, but also others. Also the possible missleading error-text is mentioned.