What is the mismatch between the BIOS and the CPU power supply detected in the Windows system

Machine Basic configuration: CPU processor This Intel Celeron III 1.2G, Brand 815P motherboard, 512M DDR266 memory, West data 80GB hard drive. In order to play the best performance of the CPU overclocking, in the overclocking process, the BIOS in the CPU core voltage set to 1.5V, each power-on motherboard self-test display CPU voltage of 1.64V, with testing software is still 1.64V. The motherboard version has been upgraded to the latest. After the CPU voltage (set to 1.5V in the BIOS, system detection is 1.66V) after the FSB to 133MHz, the processor temperature increased by 8 ℃.

Two voltage values are inconsistent due to the motherboard design error and device performance errors superimposed, does not affect the normal use. If you want to know the actual value, the digital multimeter can be used to test the CPU power supply circuit. Generally measured two points, one is the location, you can select the nearest motherboard screw hole exposed contacts, the other is in the CPU of a certain pin or it with four weeks of devices connected to the contact point. Test without the CPU, the empty board can be tested. The use of voltage to measure the empty board, the slightest test will not burn the motherboard, but it is best to ask the familiar technical staff guidance.

CPU overclocking after the temperature increased by about 8 ℃, this is normal, so overclocking means the increase in CPU temperature, not usually in the case of voltage overclocking, the increase in CPU temperature is very obvious, then you should consider for the CPU to replace a better radiator, to control the heat of the processor.