Spotted by Wccftech, this behavior is interesting because the image editing software is so CPU-intensive that anyone would assume it needed the performance cores to run. This was certainly the case for the M3 MacBook Air, which Yuryev shows using all four performance and all four efficiency cores to get the work done.

As for the Intel and AMD comparisons, both companies' best high-end desktop CPUs like the Ryzen 9 9950X and Core Ultra 285K are often competitive with the M4 Max's multi-core performance, but are dramatically less power-efficient at their default settings.