If the CPU is at a high temperature of 90 degrees Celsius for a long time (more than 5 hours), what is the adverse effect?

Simply put, a high temperature will cause the processor to automatically reduce the frequency. The processor has temperature control, and the motherboard also has. Once the temperature exceeds a certain value, the fan high-speed mode is forced on to reduce the temperature. If the temperature goes down, the processor will start to reduce the frequency, the low-frequency power consumption will decrease, and the temperature will naturally decrease. This will cause the machine to slow down and become a card. Even watching a movie is stuck. When the temperature rises, the machine will automatically shut down. In a short period of time, some machines will automatically shut down again. If the temperature is too high, shutdown to protect the machine. Of course, the CPU's frequency reduction, fan speed, automatic shutdown, and the specific processor, motherboard, BIOS settings, there is a great relationship, depending on the specific situation.
In addition, if the temperature of the processor is too high, especially in the overclocking state, the overclocking capability of the processor will gradually decrease. There is a term called Electronic migration. You can search for it. Overclock failed. It could not be used to surpass the back, etc.
High processor temperature is not good for the motherboard and memory. If the temperature is high for a long time, the back of the motherboard will be yellow. {Insert a sentence, yellow. This is also used to identify whether the video card is used for mining. Bitcoin and other electronic currencies need to be calculated using video cards, commonly known as mining. The video card used for mining will be yellow on the back of the high-temperature work for a long time .} The memory is very close to the processor, and the fan of the processor will also compress the memory.
Therefore, no matter the book, desktop, as long as the internal temperature is too high, especially the processor, graphics card and other hot households, long-term work in the status, not good for the machine. Add silicon grease, heat sink, or water-cooled, the purpose is one, cooling.
This is probably the case. If something is wrong, change it.

If the CPU is at a high temperature of 90 degrees Celsius for a long time (more than 5 hours), what is the adverse effect?