verb (used with object)

Computers. to modify (a hardware component, as a processor, graphics card, or memory) so as to increase the speed of that component beyond the specifications of the manufacturer: You can overclock your video card to improve its performance.

Origin of overclock

1985–90; over- + clock1 (in the sense “a circuit that governs the speed of other circuits”)
Related formso·ver·clocked, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for overclocking



the practice of modifying a computer (esp with a cooling system) to allow its processors to run at greater speeds than the manufacturer intended
Derived Formsoverclocker, nounoverclock, verb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012