![]() ![]() This project began, in a way, when I first received my RPi 4B, noticed that it was running as hot as early reports indicated, and decided to design and 3D-print a fan case. The Raspberry Pi inside the Fan Top case, but with the fan disconnected (“Enclosed”).The Raspberry Pi without a case, sitting on a wooden benchtop, with the CPU heatsink attached (“Heatsink”).The Raspberry Pi without a case, sitting on a wooden benchtop, and without the CPU heatsink attached (“Bare”).In addition to the cases, a few other scenarios were tested as controls: A custom-designed case to house a Noctua NF-A4x10 5V 3-pin fan, again mounted directly above the CPU, but with additional vents at the far ends of the case (the “ Noctua Vent” case).A custom-designed case to house a Noctua NF-A4x10 5V 3-pin fan mounted directly above the CPU and venting through the top (the “ Noctua Top” case).A custom-designed case to house a generic 5V fan mounted at the far end of the case and venting through the side (the “ Fan Side” case).A custom-designed case to house a generic 5V fan mounted directly above the CPU and venting through the top (which I’ll refer to as the “ Fan Top” case).The Flirc Raspberry Pi 4B heatsink case, using the heatsink adhesive pad to connect the CPU to the integrated heatsink block (and removing the standard heatsink, of course).The official Raspberry Pi 4B case from the Raspberry Pi Foundation. ![]() Six of these scenarios involved one of the following cases: During this study, the Raspberry Pi was evaluated in nine scenarios. ![]()
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