Even at the same resolution, you can increase the load on memory bandwidth by switching to very high-resolution textures, or ...

‘The integration of faster and more extensive memory will dramatically ... the Intel Max Series GPU, currently goes up to 128GB of HBM2, but it plans to increase the chip’s capacity in future ...

The M2 also supports up to 24GB of unified memory, a 50% increase over the M1 Air. That memory is paired with a GPU that can be configured with up to 10 cores, two more than the top-tier M1 Air.