A pic in a different post shows the 48k ram chip, and not far away is an SD card of 1 gigabyte - that's a dramatic contrast

Incidentally, cheap MP3/MP4 players in the last decade had a few hundred KB of RAM, an 8-bit CPU at a few dozen MHz, and a few GB of NAND flash: https://en.wikipedia.org/wiki/S1_MP3_player