Canon EOS R6 sensor review and test results published by DxOMark. Canon EOS R6 achieves an outstanding overall score of 90 points, with a combination of 24.2 bits color depth, 14.3 EV dynamic range, and 3394 ISO low-light.

With fast readout from the 20 MP sensor and a similar processor to that of the EOS-1DX Mark III, the R6 is capable of continuous shooting at up to 12 fps using the mechanical shutter.
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https://www.dailycameranews.com/2020/12/canon-eos-r6-sensor-reviewed-by-dxomark/