Unverified82% confidenceCautionTime unknown
MacBook等底部密封无进风口机型不建议买底部吹风式散热器，其散热靠机身键盘面和C面被动散热，选纯抬升铝合金支架增大对流面积更有效
1
Sources
82%
Confidence
Long-term
Relevance
-
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UnverifiedMacBook等底部无进气孔的全金属机身笔记本，风扇型散热垫几乎无效，应选纯物理导热的铝合金/相变材料被动垫，直接接触机身传导热量85% similarUnverified抽风式（真空吸附出风口）散热器降温效果优于底部吹风式，实测可降CPU温度8-15度，但仅适配底部或侧面有出风口的笔记本，MacBook等底部无出风口机型无效83% similarUnverified笔记本外置抽风式散热器仅对少数带侧出风口机型有效，多数封闭底部进气笔记本用底部吹风散热器效果有限，别指望能显著压制高功耗游戏本满载温度78% similarUnverified无风扇被动散热的ARM本（如MacBook Air、部分二合一）持续高负载会触发降频，长时间导出视频或编译时性能不如带主动散热的机型；对持续性能有要求应选带风扇的Pro级机型76% similarUnverified笔记本外置抽风式散热器（侧吸/底吸）效果远超吹风式底部风扇垫，前者直接从出风口抽热风，后者仅吹金属外壳降温有限（一般＜3度）74% similar
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