有时，并非由于我们自己的过错，我们可能会丢失笔记本电脑的充电电缆，不得不用“不太理想”的替代品勉强度日。如果“替换”充电电缆来自同一家公司，但功率不同，是否会导致笔记本电脑速度减慢？今天的超级用户问答帖子回答了一位好奇的读者的问题。

今天的问答环节是由SuperUser提供的，SuperUser是Stack Exchange的一个分支，是一个由社区驱动的问答网站分组。

照片由alistairas（Flickr）提供。

问题

超级用户阅读器user3172050想知道使用错误的电源是否会降低笔记本电脑的速度：

I have a Dell Studio XPS 1640 laptop and it requires a 90-watt charger for use. I lost my power cable, so now I am using a 65-watt charger with it. My laptop experiences a noticeable slow-down whenever it is charging, but everything speeds back up as soon as I unplug the cord and charger. Could this be because of the 65-watt power cable itself?

使用错误的电源会降低笔记本电脑的速度吗？

答案

超级用户贡献者Maxx Daymon为我们提供了答案：

Many Dell laptops are able to use 65, 90, and 130-watt power supplies, but they will adjust their performance accordingly. Dell Support article 12174 (KB 168345) notes:

• The Dell Universal Auto/Air Laptop Adapter is a 65-watt power adapter. Dell recommends that you use a 90-watt adapter with your portable system. Using a 65-watt power adapter will not harm your system, but will cause slower performance.

Specific performance throttling will vary depending on your CPU, chipset, and GPU, but overall every component will be slowed down to afford enough power to charge the battery and operate the laptop simultaneously. Laptops that require more than the 65-watt minimum (Precision workstation class laptops, for example) will simply refuse to charge when a 65-watt adapter is plugged in.

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