进程电源状态是电源选项^{(Power Options)}下的一项功能，可确定在不同电池条件下使用的CPU百分比。^(CPU)有两个设置-最大^(Maximum)处理器状态和最小处理器状态^{(Minimum Processor State)}。因此，如果您需要在更长的电池寿命和性能之间做出选择，您可以降低处理器的使用率。

什么是处理器电源状态？

性能状态，也称为 P 状态，是处理器频率、电压和其他一些东西的组合。它允许 Windows 10 匹配性能要求或有需要时。也就是说，当您更改最大处理器状态百分比时，比如说 50%，这并不意味着处理器将以 50% 的时钟速度运行。windows 在这里所做的是它选择减少用于计算P-States的因素之一。因此，如果你下降 50%，那么它可能只会下降 30%。

使用PowerCFG在电池^(Battery)供电时更改处理器电源状态^{(Processor Power State)}

既然您了解了P-State和Power State ，那么您可以通过^{(Power State)}Windows 10中的 powercfg 命令行快速更改它们。这可以在提升的命令提示符或Power Shell 上完成。^{(Power Shell.)}  在运行^(Run)提示符 ( Win +R键入^(Type)cmd并使用Ctrl + Shift以管理员权限打开它。

键入并输入命令：

powercfg /list

它将列出您计算机上的所有电源计划。在我的电脑上，我有三个——

1. 平衡 (SCHEME_BALANCED),
2. 省电模式（SCHEME_MIN），以及
3. 高性能 (SCHEME_MAX)。

接下来，我们运行以下命令。

第一个是在电源期间更改平衡计划中的处理器电源状态^{(Processor Power State)}百分比。

powercfg -setacvalueindex SCHEME_BALANCED SUB_PROCESSOR PROCTHROTTLEMIN X

这第二个是使用电池时。

powercfg -setdcvalueindex SCHEME_BALANCED SUB_PROCESSOR PROCTHROTTLEMIN X

• 根据您的需要将SCHEME_BALANCED^(SCHEME_MIN)更改为SCHEME_MIN^{(SCHEME_BALANCED)}或SCHEME_MAX。
• 将 X 替换^{(Replace X)}为 0 到 100 之间的数字。

如何添加最大^(Maximum)和最小电源状态^{(Minimum Power State)}

如果您看不到电源状态，您可以使用这些命令添加或删除。

最大功率状态

powercfg -attributes SUB_PROCESSOR bc5038f7-23e0-4960-96da-33abaf5935ec -ATTRIB_HIDE

powercfg -attributes SUB_PROCESSOR bc5038f7-23e0-4960-96da-33abaf5935ec +ATTRIB_HIDE

最小电源状态

powercfg -attributes SUB_PROCESSOR 893dee8e-2bef-41e0-89c6-b55d0929964c -ATTRIB_HIDE

powercfg -attributes SUB_PROCESSOR 893dee8e-2bef-41e0-89c6-b55d0929964c +ATTRIB_HIDE

尽管即使机器已插入电源，您也可以进行更改，但只有在使用电池时才有意义。

这篇文章将向您展示如何隐藏最小和最大处理器状态^{(how to hide the Minimum and the Maximum Processor States)}。

阅读下一篇^{(Read next)}： 如何在 Windows 10 中配置隐藏的电源选项。

Change Processor Power State when on the battery using PowerCFG

The process power state is a feature under Power Options that determines the CPU percentage to be used undеr different battery conditions. There are two settings— Maximum proceѕsor state & Minimum Рrоcessor Ѕtate. So if you need to choose between longer battery life over performance, you can lower the processor usage.

What is Processor Power State?

Performance States, also called P-states, are a combination of frequency of the processor, volage, and a few more things. It allows Windows 10 to match with the performance requirement or when there is a need.  That said, when you change the maximum processor state percentage, let’s say 50%, it does not mean the processor will run at 50% clock speed. What windows does here is that it chooses to reduce one of the factors it uses to calculate the P-States. So it is possible that if you drop by 50%, then it will only after by 30%.

Change Processor Power State when on Battery using PowerCFG

Now that you know about the P-State and the Power State, here is how you can quickly change them through the powercfg command line in Windows 10.  This can be done on an elevated Command Prompt or Power Shell.  Type cmd in the Run prompt (Win +R) and use Ctrl + Shift to open it with admin privileges.

Type and enter the command:

powercfg /list

It will list down all the power plans on your computer. On my computer, I have three—

1. Balanced (SCHEME_BALANCED),
2. Power Saver(SCHEME_MIN), and
3. High performance (SCHEME_MAX).

Next, we run the following commands.

The first one is to change the Processor Power State percentage in the balanced plan during power.

powercfg -setacvalueindex SCHEME_BALANCED SUB_PROCESSOR PROCTHROTTLEMIN X

This second is when it’s on battery.

powercfg -setdcvalueindex SCHEME_BALANCED SUB_PROCESSOR PROCTHROTTLEMIN X

• Change SCHEME_BALANCED with SCHEME_MIN or SCHEME_MAX as per your need.
• Replace X with a number between 0 to 100.

How to add Maximum and Minimum Power State

In case you do not see the power state, you can add or remove using these commands.

Maximum Power State

powercfg -attributes SUB_PROCESSOR bc5038f7-23e0-4960-96da-33abaf5935ec -ATTRIB_HIDE

powercfg -attributes SUB_PROCESSOR bc5038f7-23e0-4960-96da-33abaf5935ec +ATTRIB_HIDE

Minimum Power State

powercfg -attributes SUB_PROCESSOR 893dee8e-2bef-41e0-89c6-b55d0929964c -ATTRIB_HIDE

powercfg -attributes SUB_PROCESSOR 893dee8e-2bef-41e0-89c6-b55d0929964c +ATTRIB_HIDE

While you can make the change even when the machine is plugged in, it only makes sense to do so when you are on the battery.

This post will show you how to hide the Minimum and the Maximum Processor States.

Read next: How to configure hidden Power Options in Windows 10.

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