The Free On-line Dictionary of Computing (19 January 2023):
KIPS /kips/ [by analogy with MIPS] Thousands (*not* 1024s) of instructions per second. Usage: rare. [Jargon File]The Jargon File (version 4.4.7, 29 Dec 2003):
KIPS /kips/, n. [abbreviation, by analogy with MIPS using K] Thousands (not 1024s) of Instructions Per Second. Usage: rare.