The capacity can due to flash being shrunk and other techniques but the read/write speed can't due to the hardware bottleneck of the controller on the Switch itself.
The n64 memory expansion wasn't a cartridge, it was more of a memory module which the switch can't do due to technical limitations.
PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850







