You may encounter such a problem. When the notebook is playing games, it is very smooth at the beginning, but after playing for a while, the frame rate of the game will become very low, which directly causes the game to freeze. Under the same computer configuration, the running score is not as high as that of others. This is all due to the frequency reduction of the notebook CPU. As for the reason for the frequency reduction, we need to talk about the two “walls” of the notebook. Let me share with you about the notebook. Popular science knowledge of computer power consumption wall and temperature wall.
What does the temperature wall mean in a notebook?
The so-called temperature wall of a notebook is a temperature threshold set in advance by the manufacturer. For example, after the CPU heats up and exceeds this temperature threshold, the CPU will be reduced in frequency to reduce heat generation, which means that the performance of the CPU will be reduced. Caused problems such as computer freeze or game screen freeze.
For the notebook temperature wall, Intel presets it to be 100 degrees Celsius. In the CPU parameters officially provided by Intel, we can see that there is a parameter “TJUNCTION” in the package specification, which is the temperature threshold of the CPU. If the CPU reaches 100 degrees, there will be a certain risk. Of course, notebook brand manufacturers usually don’t set any high, because high temperatures will increase the probability of computer failure, which will undoubtedly bring a very bad brand reputation and increase after-sales costs, but if the notebook manufacturer’s settings are too conservative, will also greatly reduce performance.
Generally speaking, the setting of the temperature wall generally has several levels. For example, if the CPU of a notebook reaches 60 degrees Celsius, the fan speed will be increased, and when it reaches 80 degrees Celsius, the frequency will be forced to drop. If it reaches 100 degrees Celsius, the computer will restart directly.
In fact, the temperature wall is a mechanism to protect the chip. The desktop CPU also has a temperature wall limit, but the desktop has a strong heat dissipation capability, unlike the notebook space, the heat dissipation is limited, and the threshold of the desktop temperature wall is higher than that of the notebook computer. It is said that it will be much higher. Under normal circumstances, it is difficult to hit the temperature wall.
Under normal circumstances, the laptop running into the temperature wall is caused by the CPU turbo frequency, we only need to set the CPU to run at a stable frequency to solve it. To turn off turbo frequency, you can enter “Control Panel – Power Options – Edit Plan Settings”, change the advanced power settings, and set the maximum processor state from 100% to 99% or 98%. You can use the “NVIDIA inspector” to increase the corresponding temperature of the graphics card temperature wall, and it must be within the acceptable range of notebook heat dissipation.
What does the power wall in a laptop mean?
Compared with the temperature wall, the power consumption wall has a greater impact on the performance of the notebook. It can directly determine the maximum performance of the CPU and graphics card. We take the current mainstream i5-10210U processor of the thin and light notebook as an example, from the Intel official In terms of processor performance specifications, the standard TDP is 15W, and TDP-down and TDP-up parameters are 10W and 25W respectively, which are the maximum lower limit and upper limit of thermal design power consumption for notebook manufacturers. Within the range value, the TDP value set by the notebook manufacturer configuration is the so-called power consumption wall.
Of course, there is undoubtedly a big gap in performance between CPU power consumption running at 10W and power consumption running at 25W. Thin and light notebooks need to comprehensively consider the surface temperature, battery life and weight of the notebook, so thin and light notebooks will have a large impact on the normal power consumption wall. It is set on thin and light notebooks, and gaming notebooks usually have power consumption walls due to poor heat dissipation design of notebooks or shrinkage of materials.
If your notebook has first-class heat dissipation, you can reasonably set the power consumption wall, which can make the performance of your notebook ahead of other products with similar configurations. Download the official Intel Extreme Tuning Utility (XTU) software. In the Advanced Tuning option, you can see that the system allows The processor’s short-term maximum power, default maximum power, and duration. After changing the option to Disable, you can modify the power consumption value.
The above is the popular science knowledge of laptop power consumption wall and temperature wall shared by uniscolian. The root cause of the limited performance of notebooks, such as CPU frequency reduction, is usually caused by the power consumption wall and temperature wall. The most important thing is the heat dissipation design of notebooks. Whether it is reasonable and whether the materials used are sufficient. For daily use, users also need to maintain the laptop frequently, such as regularly cleaning dust, replacing silicone grease, etc., to prevent the laptop from hitting the wall due to poor heat dissipation.
How to discharge the CMOS battery of the notebook motherboard?
Sometimes, the notebook cannot be turned on. We may try to reinsert the memory or discharge the CMOS battery of the mainboard of the notebook, and reset the BIOS. However, reinserting and unplugging the memory is very simple, but for the CMOS battery of the mainboard of the notebook, to discharge, Many netizens do not know how to operate it. So how to discharge the CMOS battery of the notebook motherboard? Let’s share a graphic tutorial on the battery discharge of the notebook motherboard.
We all know that it is very convenient to discharge the motherboard of a desktop computer. You only need to open the side panel of the case, remove the round button battery on the motherboard, and wait for 5 minutes, preferably ten minutes (the time is not fixed, in fact, under normal circumstances, 10 seconds will be fine, of course, if it doesn’t work, you can try for a longer time), then install the battery back, complete a discharge, and reset the BIOS.
For notebooks, to shut down the notebook, you need to disassemble the bottom panel (D side) of the notebook. Since the disassembly of different models of notebooks is a bit different, we will not demonstrate it. It is nothing more than removing all the screws on the bottom panel (D side) of the notebook. On the bottom panel (D side), you can see the motherboard, but some notebooks still cannot be removed after removing all the screws on the D side, because there are clips that need to be warped.
After the D side of the notebook is disassembled, we can see the main board, and there is a plastic-wrapped round thing next to the main board, which is the button battery. Remove it at the connection interface of the button, which is generally a plug-in type.
After the interface is removed, wait for 5 minutes, preferably ten minutes (the time is not fixed, in fact, 10 seconds is fine under normal circumstances, of course, if it is invalid, you can try for a longer time), then plug the interface back and complete the notebook The mainboard CMOS battery is discharged, and the BIOS is reset.
If you still don’t know how to discharge the notebook’s CMOS battery, you may wish to use the above method to solve it. In fact, it is similar to the desktop method, except that the button battery is connected in a different way.
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What should I do if the laptop screen is turned sideways?
I don’t know which shortcut key on the keyboard, the computer screen is upside down, and I don’t know how to adjust it, but in fact, you don’t have to worry about this problem, it’s just that you accidentally set the screen orientation. So what should I do if the laptop screen is turned sideways? The laptop screen upside-down recovery method also applies to desktops, of course.
Method 1: Shortcut keys
You can try to press the “Ctrl+Alt+↑” key combination at the same time to see if you can adjust it back. Conversely, if you want to turn the screen upside down, use Ctrl+Alt+↓ in the opposite direction.
Method 2: Set the screen resolution
There is an “orientation” setting under the screen resolution setting, just set it to “landscape”.
Take Win10 as an example, we right-click on the blank space of the desktop, and after the pop-up menu, we select “Display Settings”. Under the option of display orientation, we can set it to “landscape” to turn the computer screen upright. For Win7 users, the method is also very simple. We right-click the blank space on the desktop, click “Screen Resolution”, and set the orientation to “Landscape”.