verb

overclock

OH-vuh-klok

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Overclock (verb) means to make a processor, graphics chip or memory run faster than the speed its manufacturer rated it for, usually by changing settings in a computer's firmware or a tuning program. Example: “He overclocked the memory and the machine stopped booting.”

verb

To make a processor, graphics chip or memory run faster than the speed its manufacturer rated it for, usually by changing settings in a computer's firmware or a tuning program.

"He overclocked the memory and the machine stopped booting."

"Some chips are sold unlocked so that buyers can overclock them."

noun

The higher-than-rated speed a component has been set to run at, or the act of setting it.

"The overclock held steady for an hour before the temperature climbed."

How to use overclock

Learner’s notes

In plain EnglishMaking a computer chip run faster than the speed it was sold at.

When to use it

Common among enthusiasts and in hardware reviews. Overclocking is the usual noun for the practice.

Memory tip

Stress the first syllable as a verb. The related noun for the activity is overclocking.

Trace the full origin ↓

Easily confused with

underclock → undervolt boost clock

Common pairings

overclock the CPU stable overclock overclocking headroom factory overclocked

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C2 · Advanced serendipity Fortunate discoveries made entirely by accident.

Gen Z slang rizz Charm — the ability to attract a romantic interest.

B2 · Intermediate empathy The capacity to share another person’s feelings.

C1 · Advanced nonchalant Casually calm and relaxed; unconcerned.

Internet slang delulu Delusional — believing something against the odds.

Etymology nostalgia Greek nostos “return home” + algos “pain”.

C2 · Advanced serendipity Fortunate discoveries made entirely by accident.

Gen Z slang rizz Charm — the ability to attract a romantic interest.

B2 · Intermediate empathy The capacity to share another person’s feelings.

C1 · Advanced nonchalant Casually calm and relaxed; unconcerned.

Internet slang delulu Delusional — believing something against the odds.

Etymology nostalgia Greek nostos “return home” + algos “pain”.

Test yourself on “overclock” A quick quiz — meaning, synonyms & usage →

Fill the gap

Can you complete this real example?

He _____ the memory and the machine stopped booting.

Etymology

From over- plus clock, referring to the clock speed at which a chip is rated to run.

Origin: English

Synonyms

View more →

tune push clock up OC

Antonyms

underclock downclock

Related words

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Frequently asked questions

What is the difference between overclocking and undervolting?

Overclocking raises the speed a chip runs at, which usually increases its heat and power draw. Undervolting lowers the voltage supplied to it, aiming for the same speed with less heat. They are sometimes done together, since a cooler chip can hold higher speeds.

Does overclocking void a warranty?

That depends entirely on the manufacturer and the market. Some sell chips explicitly designed to be overclocked, others treat it as out-of-specification use. Terms vary by company and by country, so the wording of the particular warranty is what decides it.

What is a boost clock?

A boost clock is a higher speed the manufacturer itself allows the chip to reach automatically when temperature and power headroom permit. Because it is within the official specification, it is not overclocking.

What is the meaning of overclock?

"overclock" (verb) means to make a processor, graphics chip or memory run faster than the speed its manufacturer rated it for, usually by changing settings in a computer's firmware or a tuning program.

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