[FX30 Cat-M vs Cat-1] High difference of available RAM

We are comparing FX30 Cat-M (R14) and Cat-1 (EMEA) FX30, and just saw that the total of RAM is different (and so the available).
The Cat-1 has almost 30MB less of RAM than the Cat-M.

Is this a normal behavior?

Cat-1 RAM total: 163065856
Cat-M RAM total: 192270336

Hi G.amaudric,
Cat-M and Cat-1 use two different types of chips, so there will be differences
for details you can refer to this document WP series, WP series
Thanks,

Thanks for your answer, in case anyone is wondering:
CAT-1:
image
CAT-M:
image