{"id":23630,"date":"2024-01-07T14:38:44","date_gmt":"2024-01-07T05:38:44","guid":{"rendered":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=23630"},"modified":"2024-01-07T14:38:44","modified_gmt":"2024-01-07T05:38:44","slug":"%e3%83%95%e3%82%a1%e3%83%b3%e4%bb%98%e3%81%8d%e3%83%92%e3%83%bc%e3%83%88%e3%82%b7%e3%83%b3%e3%82%af%e3%81%84%e3%81%be%e3%81%84%e3%81%a1","status":"publish","type":"post","link":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=23630","title":{"rendered":"\u30d5\u30a1\u30f3\u4ed8\u304d\u30d2\u30fc\u30c8\u30b7\u30f3\u30af\u3044\u307e\u3044\u3061"},"content":{"rendered":"\n

今回AliExpressから購入したRaspberry Pi 5 Model B (RPi5)は，RPi5 8GB基板，5V5A純正AC電源(US仕様)，ファン付き純正ケースのセットのつもりでした．<\/p>\n\n\n\n

ところがファン付きのヒートシンクも付いていて，純正ケースのファンを外して代わりに取り付けました．<\/p>\n\n\n\n

ファンが付いたヒートシンクって強力そうなんですがそうでもなくて，CPUの温度は常に55〜60℃です．ちなみに，RPi5のファンはCPUの温度が47℃以上で動くようになっているそうです．ですから事実上回りっぱなしなんですが温度はあんまり下がりません．<\/p>\n\n\n\n

どうも心象として，ファンがヒートシンクを効率よく冷やしているようではないようです．<\/p>\n\n\n

\n
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セットに含まれていたファン付きヒートシンク<\/figcaption><\/figure>\n<\/div>\n\n
\n
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いまいち非力<\/figcaption><\/figure>\n<\/div>\n\n\n

純正ケースに付属してきたヒートシンクとファンと交換して様子を見てみます．<\/p>\n\n\n\n

大差ない感じ<\/h3>\n\n\n\n

純正のファン付きケースのファンに戻しましたが，CPUの温度変化の傾向は大差ないですね．55前後から60℃台前半で推移しています．また，どちらのファン+ヒートシンクを使用してもケース全体がかなり暖かくなるので，サードパーティーの大型ヒートシンクが付いたパッシブなものを購入しようと思います．信頼できないファンが付いているよりパッシブな方が安心です．<\/p>\n\n\n\n

RasPi4は30℃台<\/h3>\n\n\n\n

ちなみに，Raspberry Pi 4のほうはこのような少し大きめのファンのついたケース1<\/a><\/sup>国内の通販で買ったと思います．<\/span>に入れていて，この時期CPUの温度は普通の使用時で30℃台前半です．<\/p>\n\n\n

\n
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Raspberry Pi 4 8GB<\/figcaption><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"

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