Troubleshooting • Is the Raspberry Pi 5 power (in)efficient?

Hello, I got a new Raspberry Pi 5 8GB and installed Raspberry Pi OS Bookworm 64-bit on it.
I'm quite surprised at the heat this thing generates!

• It wears the original case with its small heatsink and fan.
• It is just sitting idle on my desk, the only cables connected are gigabit LAN and power (original power adapter). No monitor.
• I reduced the minimum frequency to 500MHz by setting arm_freq_min=500 in config.txt, and I can see it's in effect using

  Code:

  vcgencmd measure_clock arm

• I also applied the few tunables that powertop suggested.

Despite all that, the whole board feels hot! The CPU temperature is between 56 to 60 C depending on the external conditions and the fan activity.

What is the CPU doing? What can I do to make it run cooler, and consume less W when idling?

Thanks in advance.

Statistics: Posted by jimis0 — Fri Apr 26, 2024 4:09 pm — Replies 2 — Views 47

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