TDP measures in watts, TDP stands for Thermal Design Power and is also called thermal design point, it refers to the power consumption under the processor load or heat generated by a computer chip (CPU, GPU). The TDP is the maximum power that one should be designing the system for. the cooling system in a computer is designed to dissipate under any workload.
Sometimes the TDP of a CPU has been underestimated, and processors are used for certain real applications such as video editing or games causing the CPU to exceed its specified TDP. In this case, CPUs either cause a system failure or throttle their speed down. Most modern processors when cooling system failures will cause a therm-trip only, such as an incorrectly mounted heat sink or a not operational fan.
How to reduce Heat of the CPU?
For example, Now a days laptop’s CPU cooling system may be designed for a 20-watt TDP, It means that it can dissipate up to 20-watt of heat without exceeding the maximum heat for the laptop’s CPU. Heat exceeding the maximum heat following methods is reduced the temperature of the CPU.
1. Heat sink with a proper and suitable fan,
2. Two passive cooling methods Thermal Radiation or Conduction or a combination of these two methods are used.
TDP types in CPU
some processors may allow them to process at several different power levels, depending on usage conditions, available cooling conditions, and power requirements.
- configurable TDP (cTDP) :
it is a programmable TDP and also known as configurable TDP or TDP power cap, it is a mode of nowadays generations of Intel mobile processors and AMD Processors that allows adjustments in their TDP Values it means the power consumption of a processor can be changed its TDP at the same time. Depending on the available cooling devices and desired power the processor may operate at higher and lower performance levels.
Intel processors provide three operating modes
- Nominal TDP
- cTDP down
- cTDP up .
2. scenario design power (SDP).
SDP is an additional thermal reference point to represent the use of critical devices in real-world environments. It balances performance and power requirements between system workloads to reflect actual power consumption
- Scenario design power (SDP) is not an additional power state of a processor. The SDP only states the average power consumption of a processor using a certain mix of benchmark programs to simulate a “real-world” Environment. For example, mobile Haswell processors show the difference between TDP and SDP
What is the Clock rate in the CPU? What is Overclocking in Processor?
