Probing Pi 5 silicon with an Electron Microscope!

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The Raspberry Pi 5 can't be overclocked past 3 GHz. Why? The secret is hidden in the silicon deep inside.

X-rays don't go deep enough. This video explores modern CPU architecture, clocks and PLLs (Phase-Locked Loops), silicon die shots, and even transistor-level debugging with an electron microscope!

Mentioned in this video:

- Blog post with more images:
- Open Circuits book:
- Kleindiek Nanotechnik:
- John McMaster (Twitter):
- Siliconpr0n die shot - RP1:
- Siliconpr0n die shot - BCM2712:
- der8auer's video on 7nm analysis:
- Water cooling block for Pi 5:
- EDATEC's passive heatsink for Pi 5:
- Apple II Pendulum Clock:
- 32nd note drummer:
- Monster vs Dave Grohl drum battle:

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Contents:

00:00 - Human DNA on my chip?
00:42 - Overclocking, featuring actual clocks
05:59 - Heat is not an issue (unless you're a candle)
07:14 - Die shots: OCP on the Pi 5's BCM2712
11:51 - Die shots: RP1
12:37 - Probing individual transistors at 16nm
18:35 - Peering deeper inside silicon
20:06 - Learning more...