Colour

•  Arctic Grey (1)
•  Arctic Grey (1)

RAM

•  8 GB (1)
•  16 GB (1)

RAM speed

•  400 MHz (1)
•  2666 MHz (2)
•  3200 MHz (2)
•  4266 MHz (1)
•  4800 MHz (2)
•  5600 MHz (2)
•  8448 MHz (2)
•  8533 MHz (2)

Card reader

•  N/A (1)
•  Yes (2)