Weird that the M4 Pro in the Mac mini can go up to 64GB. Maybe a size limitation on the MBP motherboard or SOC package?

Probably just Apple designing the pricing ladder.

It looks like different versions of the ‘Pro’ based on core count and memory bandwidth. Im assuming the 12c Mini M4 Pro has the same memory bandwidth/channels enabled as the 14c MBP M4 Pro, enabling the 64GB. My guess would be related to binning and or TDP.

The 96GB RAM option of the M3 Max disappeared.