Global Standards for the Microelectronics Industry
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)".