Probing Pi 5 silicon with an Electron Microscope!

Visit https://brilliant.org/JeffGeerling to start your 30-day free trial, and get 20% off your annual subscription! 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: https://www.jeffgeerling.com/blog/2024/die-shots-and-transistor-level-debugging-on-raspberry-pi-5 - Open Circuits book: https://amzn.to/3uZRJow - Kleindiek Nanotechnik: https://www.nanotechnik.com/copyright.html - John McMaster (Twitter): https://twitter.com/johndmcmaster - Siliconpr0n die shot - RP1: https://siliconpr0n.org/map/raspberry-pi/rp1-c0/ - Siliconpr0n die shot - BCM2712: https://siliconpr0n.org/map/broadcom/bcm2712-c0/ - der8auer's video on 7nm analysis: https://www.youtube.com/watch?v=EKb3OAoGeIw - Water cooling block for Pi 5: https://www.jeffgeerling.com/blog/2024/water-cooling-overkill-pi-5 - EDATEC's passive heatsink for Pi 5: https://www.edatec.cn/en/ac/pi5-opencase.html - Apple II Pendulum Clock: https://github.com/wkjagt/apple2_pendulum_clock - 32nd note drummer: https://www.youtube.com/watch?v=GptOo23v3SE - Monster vs Dave Grohl drum battle: https://www.youtube.com/watch?v=3AZz9TSjZCM Support me on Patreon: https://www.patreon.com/geerlingguy Sponsor me on GitHub: https://github.com/sponsors/geerlingguy Merch: https://redshirtjeff.com 2nd Channel: https://www.youtube.com/c/GeerlingEngineering 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...