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调整了一下NUC的风扇策略 by oflyhigh

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· @oflyhigh ·
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调整了一下NUC的风扇策略
之前费了九牛二虎之力终于搞定了X230的风扇,再次开机后风扇噪音从拖拉机的突突突声变成比蚊子的嗡嗡声还要小,如果不将耳朵贴近风扇口,几乎很难听到声音。

弄完X230之后,我突然觉得我的NUC噪音大到难以忍受了,其实再这之前它的噪音我是非常满意的,而X230风扇复活后,相比之下,NUC的声音就是巨响了。

我将NUC拆开至一半,想了想又装回去,毕竟不是完全忍受不了,万一拆开的过程弄断了线,就悲剧了。可是装回去开机之后,又觉得噪音有点吵,于是想到了进BIOS设置一下。

开机后按F2进入BIOS,并且进入到Cooling(制冷设置)
![](https://cdn.steemitimages.com/DQmQhuFaaKH3dRb6ESWc29btwMh1x9YTL85tVspR9WS94np/image.png)

然后选择了自定义策略,做了如下修改:
![](https://cdn.steemitimages.com/DQmQBeWw6g34HQi4SBwm7R4eC59c1BJEp2pJrb19qbPC4uX/image.png)

其实其它的都没那么重要,对声音影响最大的是:***`Minimum Duty Cycle`***

这个词翻译过来,叫做***`占空比`***,简单来讲就是在一个周期内,高电平所占的比例,而这个高电平所占的比例相当于给设备的实际电压,常用于风扇调速、灯光调亮度等等。

这项原本的设置是45%,也就是说,如果风扇的电压是5V,那么风扇初始将会工作在2.25V电压上,而电压越高,风扇的转速越快,反之亦然。

我将这项设置为30%,那么风扇初始速度(待机速度)就会比较低,响应的,噪音自然小了很多。重启后,NUC小机器果然安静无比,这样就不用拆机拆风扇啦。

当然了,这样做的代价可能会导致CPU和内存温度偏高,不过无所谓了,现在的原件都皮实得很呢。

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