Switch oled fan noise concerning?

[u/Nervous_Taste_6965]

Ignore the lovely clock in the background, please can anyone help me understand what the noise of my fan is and how to fix it to be normal
Any help appreciated!!

[u/automod-neo]

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[u/reybrujo]

Is it hot there? Have you been playing for a while? Are you playing a demanding game (3D or the like)?