What Jeff Geerling thinks about semiconductors

@jeff-geerling · 3 positions · On ppll ↗

Developer, author and YouTuber covering Raspberry Pi, homelab hardware and Ansible automation.

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Only Jeff Geerling on semiconductors. See everyone on semiconductors

1 dated position, 2026, in their own words. Our reading of what Jeff Geerling has said — not written or endorsed by them.

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1. 21 Sept 2026

   Our readingGetting memory timings right for modern LPDDR RAM chips is technically difficult, and a marginal chip or a bad solder joint can cause unpredictable failure modes.

   Their wordsMemory timings, especially for modern LPDDR chips, are tricky to get right, and having a bad solder joint, or a cheap RAM chip that only barely passed validation, means you get weird failure modes.

   ↗Raspberry Pi locks down Pi 5 RAM upgrades in firmwarejeffgeerling.com 1st of 2 in this piece