Year

•  2015 (1)
•  2019 (2)
•  2020 (1)

Processor

•  Intel I5 (1)
•  Intel I7 (1)

RAM memory

•  8 GB RAM (5)
•  16 GB RAM (4)
•  32 GB RAM (1)

Touchbar

•  With Touch Bar (2)
•  Without Touch Bar (1)