kilo (K) (as a prefix to units of semiconductor storage capacity)

A multiplier equal to 1024 (210).

NOTE 1 Contrast with the SI prefix kilo (k) equal to 103, as in a 1‑kb/s data transfer rate, which is equal to 1000 bits per second.

NOTE 2 See note 2 to "mega (M)".

References: 

JESD21-C#, 1/97
JESD100-B, 12/99