And the results are not surprising, the M1 currently gets stomped in 4K Noise Reduction by more than 2x, almost 3x for the slowest Mac (the 2017 iMac Pro Pro Vega 64).
And at least currently it seems to show the power of GPU adds to Macs, over what the M1 can do. Now surely the M1 will scale, but we will have to see just how far it goes.