Results of Skia's nanobench for each of available configs.
The RPi4 board was using default clocks and was provided adequate power and cooling. The tests were conducted on fully-updated Raspbian Buster.
Skia was built with https://github.com/google/skia/commit/1e03b6b10e89fc54f379df4b2d705b1c64e2e0d6
I'd love to test with RPi3B and RPi3B+ that I have, but my charger and PSU seem to be too weak, as both boards report "under voltage" condition.