I have the same card and the same issue
Comparing the range of values for the GTX 1060 and the 2080TI, it is clear that there is a bigger range of values for the 1060 and it has a several peaks. While the 2080 is closer to a bell curve.
Having multiple peaks is fairly common however. It generally means there are several common mis-configurations, or several common overclock settings.
A common mis-configuration for example would be seeing frame rate limiting at the monitors refresh rate (often 60Hz / ~59 FPS), or differences in behavior with different device driver versions.
To have such a clear step in the performance 75 <==> 130FPS and to only see it more often with an overclock almost surely means there is some throttling somewhere.
The 1060 and 1080 cards seem to have a thing called NVIDIA Boost 3.0, which can cause GPU clock speed changes even at relatively low temperatures. There is also a voltage factor.
See,
https://www.techpowerup.com/review/n...x-1080/29.html
So maybe that is the explanation?
The difference with other benchmarks might be the short duration of the DX12 benchmark. It is short enough that no stable temperature is found. If you adjust the test preferences to run the test for longer, the results might be more consistent. Just speculation.
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