Noun
clock rate (countable and uncountable, plural clock rates)
(computing) Synonym of clock speed
Clock rate of a processor chip refers to the frequency at which the central processing unit (CPU) is running. Source: Internet
The 4-bit processors Intel 4004 First microprocessor (single-chip IC processor) * Clock rate 740 kHz The 4004's original goal was to equal the clock rate of the IBM 1620 Model I (1 MHz); this was not quite met. Source: Internet