FYI - M4 has more bandwidth

  Chip       Bandwidth (GB/s)
  ———-       ————————————
  M2         100
  M3         100
  M4         120 (20% more)

  M2-Pro     204
  M3-Pro     153 (less than M2-Pro)
  M4-Pro     273 (78% more than M3-Pro)

  M2-Max     409
  M3-Max     409
  M4-Max     546 (33% more than M2/M3-max)

https://arstechnica.com/apple/2024/10/apples-m4-m4-pro-and-m...