Step 2: No matter what model LGA775CPU is used, it is recommended to set the starting temperature of CPU fan at 24~35℃. If the starting temperature of CPU cooling fan is set too high (such as above 50℃) and the starting PWM value is set too low (such as the PWM value of about 800rpm), the heat generated by CPU will not be discharged in real time, resulting in overheating and shutdown.
"Shutdown temperature? (℃/? ) "is used to configure the initial value of automatic shutdown when the system temperature is too high, and the prompt is in Celsius or Fahrenheit.
"Deceleration CPU duty ratio" is used to select the CPU deceleration operation ratio, which can distinguish "Norma l" or "79%" and other percentage points.
Turn on the machine first, and then press the del key on the right keypad repeatedly, the system will enter the coms configuration, and then press the up and down keys to select the PC health state, in which CPU fanEQ speed control means fan speed control, and selecting enabled means turning on the speed control effect (I can't find the bios version of your motherboard, but it is generally configured. If there is no CPU fanEQ speed control, it is mostly CPU FAN speed control. In short, it is the option of electric fan adjustment, usually the option with the word fan. )
Step 4: For the value of the CPU fan full speed (℃) option, it is recommended to configure it in the range of 60~64℃ (not higher), because most Pentium 4 or Celeron D with LGA775 interface have nothing to do with it. The temperature is about 75℃. If the CPU persists when the cross-bios setup diagram exceeds or is very close to this limit, it will cause irreparable damage to the CPU.
Go to BIOS- Power Supply-Hardware Monitor-set the cpu q-fan control option to enable, and the cpu q-fan profile option will appear. When set to [Best], the cpu cooling fan will automatically adjust the fan speed according to the chassis temperature. If it is set to [Mute], the cpu cooling fan will run at the lowest speed in the windless state, and if it is set to [Performance], the cpu cooling fan will run at the highest speed under the condition of cooling efficiency.
"* * Temperature Alarm * *" is used to configure the CPU overtemperature alarm and should be set to "Yes"; Then, the values collected by the system are used for hardware monitoring and testing, including the running status of "CPU" fan, "power supply" fan and "panel/board" fan. If the original fan is used, the system will think that the CPU fan is defective and give an alarm because there is no speed measuring function, so it should be set to "No" at this time, and the alarm function of other fans should also be set to "No". The system monitors and detects the flashing cpu voltage, temperature and other state parameters, but the BIOS with overclocking configuration function will include fine-tuning the CPU core voltage and I/O voltage. The internal meaning of this department must be configured according to the internal meaning of the detailed CPU overclocking software motherboard BIOS.
The principle of the step-down circuit is shown in figure 1. The voltage of+12V led from the red line of the fan interface is connected to the input end of the three-terminal regulator 7806 1. After the internal circuit of the three-terminal voltage regulator 7806 is depressurized and stabilized, the voltage of +6V is output from the three-terminal voltage regulator 7806 and supplied to the fan. The voltage at both ends is the input and output end of the three-terminal regulator 7806 and the grounding end of the fan interface (dark black line (2) connects a whole red line of the fan interface behind the scissors to the 1 pin of the three-terminal regulator 7806; ⑶ Connect a whole red wire of the electric fan behind the scissors to three pins of the three-terminal regulator 7806; (4) Connect the dark black line in the serial line from the fan interface to the fan to the two pins of the three-terminal regulator 7806; 5] The connection mode of the external power supply fan and another fan is different. The 1 pin of 7806 is connected with the yellow power cord, and the 2 pins are connected with the dark black power cord.
I do desktop maintenance. In the practice of maintaining the desktop for many years, I have done some tests and exams in removing desktop noise.
"* * * temporary? Select (℃/? Item * * "is the initial value for selecting bios to set the operating temperature when opening the screen, and the temperature tips of Celsius and Fahrenheit are also applied. The configuration here is only for CPU.
Step 5: When adjusting the starting PWM value, do more frequent tests, because the ratio of the speed of different CPU fans to the PWM value is not different. However, it is suggested that the initial speed of the CPU fan should be adjusted to above 1 100rpm (some brands of motherboards will give a zero-speed alarm or automatically shut down when the speed of the CPU fan is lower than 2000rpm, so we can turn off the speed alarm function of the CPU fan), and the approximate scale of its PWM value is 15~35. If the noise on the desktop is mainly caused by CPU fan, video card fan and power supply fan, the main point I accept is to reduce the power supply voltage of the fan, that is, to reduce the speed of the fan. I have done this transformation on many desktops, and the temperature in all parts of the chassis is basically 25℃ before the speed reduction. After 8 hours of continuous use, check and judge the desktop. The results show that the external temperature of CPU radiator is 37℃, the external temperature of graphics card radiator is 36℃, the temperature of power socket is 37.5℃, and the highest temperature in the whole chassis is 35℃. The internal temperature of the chassis only reaches the standard of Intel's cpubios overclocking "38℃ chassis". This method is simple and practical, and it is recommended to everyone.
Step 6: Step 6: Slope PWM is generally configured at 16PWM value/℃
Select "chipset function settings" from the main menu to enter the chipset function configuration, as shown in Figure 2. The detailed internal essence of this configuration varies from motherboard to motherboard, but it basically includes the monitoring and detection of system hardware status, the configuration of CPU overtemperature cover, and the configuration of memory and video memory status.
Step 3: The configuration item of CPU fan off (℃) is very effective after the system enters the S 1 standby state, because the CPU load will be minimized and the CPU temperature will be reduced accordingly (usually only about 20℃) after the system enters the S 1 standby state, so the heat generated by the CPU can be effectively discharged only by the heat sink, and no cooling fan is needed, so it is recommended that you configure the value of this item as 65433.
In addition; The intelligent fan control and intelligent CPU fan function of hardware monitor are modified.
The "Reset Chassis Open State" and "Chassis Open" items are used to configure the monitoring, detection and alarm of desktop chassis (open), and they are always set toNo..
Adjustment rate of cpu electric fan
Text/Xue Really
Pace 1: In order to apply the control effect of intelligent CPU fan, it is necessary to configure "CPU fan control by" in the bios of the motherboard as the step-down circuit accepted by the three fans of Smart. They are the same, but due to their different powers, they should be treated differently: (1) CPU fan is the most powerful of the three fans. Therefore, the three-terminal voltage regulator 7806 should be connected close to the electric fan and naturally hung in front of the electric fan. If the wind passing through the process fan is allowed to dissipate heat to the three-terminal voltage regulator 7806, the detailed location is shown in fig. 2. (2) The power of the power supply fan is half as large, so there is no need to consider the problem that others need to solve the heat dissipation of the three-terminal regulator 7806. However, for desktops with poor matching between the power supply and the whole machine (that is, insufficient power supply) or too many installation tools for the whole machine (such as installing two optical drives and two hard disks), reducing the fan speed will lead to poor heat dissipation, so 1 power supply fan can be added outside the power supply and used at the same time with the original fan. The added fan is directly connected to the desktop power supply after being connected to the three-terminal regulator 7806. The yellow line in the desktop power supply is 12V, and the dark black line is the ground line. The detailed location is shown in Figure 3. Although some desktops need to add 1 power supply fans, the overclocking setting of survival cpu can prolong the service life and eliminate noise after slowing down. Actually, it's worth a try. (3) The video card fan is small, but the rotating speed is high, which leads to great noise, so the original high speed and small size should be lost. Replace the electric fan with a larger body area and power than before to connect the original heat dissipation effect. After replacing the electric fan with a large fuselage area, it is very important to fix the large electric fan. Two (diagonal) screws are rarely used to fix the radiator. In fact, there is no way to fix it with screws, but it can also be attached to the radiator with double-tube universal adhesive or adhesive. The graphics fan can be connected to the original interface, but it is best to connect the adapter to the power supply after the trip. The detailed location is shown in Figure 4. (4) From Figure 3 and Figure 5, we can see the layout of the power supply and the external power supply fan, and the external power supply fan can also be located at the lower part of the power supply according to the environment of the cooling hole of the power supply housing. As we can see from Figure 6, all three-terminal voltage regulators 7806 are hung in the chassis, which is absolutely necessary to ensure that they are not in contact with the circuit board and all zodiac signs. (5) overclocking cpubios with series resistors can also achieve the purpose of reducing voltage. However, due to the different sizes and rated currents of electric fans, the requirements for the size and power of the resistors used are also different. The calculation is poor, and the resistance calculated according to the formula often fails to reach the estimated step-down value after being connected to the circuit, so it is better to use 7806 as usual and connect it according to the diagram.
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