Will these, like previous models, have varying SSD performance depending upon how many chips are populated resulting in varying parallelization of SSD operation

Will these, like previous models, have varying SSD performance depending upon how many chips are populated resulting in varying parallelization of SSD operations? If so, knowing those configurations would be useful. I have a friend I recently told to wait for the M3 models (and for reviews of same and for the initial bugs, etc. shakeout to subside). I'm also wondering about the reported/speculated internal bus width and bandwidth differences between the M2 and M3. Supposedly, the M3 is/would be a bit narrower, hopefully making up the resulting impact upon performance through other improvements.