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	<title>降压 &#8211; mylogs.cn</title>
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		<title>显卡的100%功率，其实不是上限</title>
		<link>https://mylogs.cn/%e6%98%be%e5%8d%a1%e7%9a%84100%e5%8a%9f%e7%8e%87%ef%bc%8c%e5%85%b6%e5%ae%9e%e4%b8%8d%e6%98%af%e4%b8%8a%e9%99%90/</link>
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		<dc:creator><![CDATA[steve, zhang]]></dc:creator>
		<pubDate>Tue, 04 Aug 2026 02:54:04 +0000</pubDate>
				<category><![CDATA[经验与技巧]]></category>
		<category><![CDATA[MSI Afterburner]]></category>
		<category><![CDATA[功率上限]]></category>
		<category><![CDATA[显卡调优]]></category>
		<category><![CDATA[游戏性能]]></category>
		<category><![CDATA[降压]]></category>
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					<description><![CDATA[你在 MSI Afterburner 里见过那个功率上限滑块，多半没敢动过——毕竟「100%」看着就像天花板。 [&#8230;]]]></description>
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<p class="wp-block-paragraph">你在 MSI Afterburner 里见过那个功率上限滑块，多半没敢动过——毕竟「100%」看着就像天花板。</p>



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<p class="wp-block-paragraph">XDA 撰稿人 Tanveer Singh 的说法是，显卡标称的 TGP（整卡功耗）并不是硬件真正的极限。厂商给的默认功率上限更像一道保险，而且是按体质最差的那批芯片来划的。只要固件允许，多数显卡能往上推到 115% 甚至 120%，等于凭空多出 15% 到 20% 的功耗预算，而且不需要刷第三方 vBIOS。</p>



<p class="wp-block-paragraph">操作简单得有点反直觉：把 Afterburner 里的功率滑块往右拉，其他什么都不用调。N 卡也可以在 Nvidia App、A 卡在 AMD Adrenalin 的性能设置里做同样的事。多出来的余量会让显卡自动维持更高的加速频率，平均帧和最低帧一起往上走，尤其是 1% low（最卡的那百分之一帧的表现）会明显好看一些。</p>



<p class="wp-block-paragraph">但这里有个坑。功耗上去，发热跟着上去。显卡不再撞功耗墙，转头可能撞上温度墙——固件到点就自动降频，等于白折腾一场。机箱进出风不够、散热器又一般的卡，先别急着拉滑块。</p>



<p class="wp-block-paragraph">我的判断是，比起加功率，降压对多数人更划算。同样在 Afterburner 里调电压-频率曲线，用更低的电压跑出差不多的性能，温度、噪音、显卡寿命全都受益；有时候因为散热余量变大，帧数反而更高。加功率是拿温度换一点点上限，降压是拿一点点上限换全局的稳。</p>



<p class="wp-block-paragraph">你的显卡拉过功率上限吗？动手之前，先跑个满载测试看一眼温度峰值，心里有数再说。</p>



<p class="wp-block-paragraph">来源：XDA Developers</p>
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