Our best result when manually overclocking came with a +110MHz GPU offset and +850MHz memory offset. This was with the power and temperature sliders set to their maximum values.
Average clock speed under load
This resulted in the Palit JS averaging just over 2070MHz, a real-world gain of 136MHz based on our stress test.
In the games we retested at 1440p resolution, this extra frequency saw our frame rate improve by 8 or 9% in our testing. This is overall pretty much as expected for a 2070 Super.