Thermal Design Power (TDP)
This tells the maximum heat that a CPU can produce during operation. It is measured using Watts, which represent how much energy is transferred in a single second. So the higher the TDP, the more heat is produced by the CPU. But this also means that a CPU with a higher TDP will typically have better performance than a CPU with low TDP. This is a very important concept when designing a computer. A powerful processor with a high TDP may be very fast, but if it needs to operate in a hot environment, with little to no airflow, it will likely overheat.