What Is TDP? A Basic Definition

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TDP stands for thermal design power or, depending who you ask, thermal design profile. The TDP number tells you the maximum heat a computer chip, such as a CPU or GPU, can use in watts. It also is often used as a basic indicator of power consumption.

More watts equals better performance, but also higher temperatures and more power consumption. PC OEMs can sometimes lower the TDP on a chip to increase battery life on a laptop or raise it up to boost speed.

When it comes to CPU shopping, check out your CPU’s TDP to determine what kind of CPU cooler you need and to make sure you have a PSU (power supply unit) that provides enough juice. Selecting the best thermal interface material (TIM) will help keep thermals in check, and you should also make sure to check your CPU temperature semi-annually to ensure that your CPU cooling is up to par. 

This article is part of the Tom's Hardware Glossary.

Further reading:

Scharon Harding

Scharon Harding has a special affinity for gaming peripherals (especially monitors), laptops and virtual reality. Previously, she covered business technology, including hardware, software, cyber security, cloud and other IT happenings, at Channelnomics, with bylines at CRN UK.

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  • ddmeltzer8
    Guest said:
    What is the meaning of TDP? Thermal design power explained.

    What Is TDP? A Basic Definition : Read more
    Even in the first paragraph theres a HUGEun-truth!TDP is not the max wattage a chip creates .So why would i read further if i have to fact-check everything in the article?The people at Toms obviously hasnt...