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What is BIOS? How to enter BIOS, and how does BIOS set the cache of CPU?
BIOS is the abbreviation of English "BasicInputOutputSystem", and the Chinese name after literal translation is "Basic Input Output System".

It is a set of programs solidified on a ROM chip on the computer motherboard, which stores the most important basic input and output programs of the computer, self-checking programs after starting and self-starting programs of the system, and can read and write the specific information of system settings from CMOS.

The steps of BIOS setting CPU are as follows:

1. First, restart the computer. When restarting, press and hold the Delete key (the actual key is determined according to the computer model) to enter the BIOS interface.

2. In the BIOS interface, use the direction keys to enter ai tweaker, and set C 1E support, A20M and Inter(R) SpeedStep(TM) to "Off".

3. Then return to the advanced settings and set the first-level cache and the second-level cache of the cpu.

4. Click the "DRAM frequency" option again, select "DDR3- 1600MHz" in the pop-up box, and then press F 10 to save and exit, thus completing the CPU overclocking setting.

Extended data:

After entering the BIOS environment, you will find that the basic hardware information is almost gray and cannot be operated.

The reason why the secondary cache of CPU can't be set is because the physical structure of CPU is completely fixed after it is designed, manufactured, packaged and tested as a commercial chip, unlike programmable processor types such as FPGA, which still have custom settings, so the secondary cache of CPU chip is always a fixed value and will not change.

The BIOS can only change the boot mode. Advanced BIOS can adjust the overclocking parameters of CPU, and its related electrical parameters can be set to a certain extent, but the physical parameters cannot be changed.