• A new version of the Raspberry Pi 4 Model B has been (quietly) introduced. • It now uses a dual-RAM configuration. • The Raspberry Pi 4 Model B (PCB 13a) adopts a dual-RAM configuration to ‘improve supply chain flexibility’ and manufacturing efficiency, per a company product change notice document. • Earlier versions of the Raspberry Pi 4 use a single RAM chip on the top of the board. • The new revision adds a second LPDDR4 chip to the underside, with a couple of passive components also moved over. • Even those living under rocks will know that RAM prices are high right now, which is why Raspberry Pi announced big price increases for the Pi 4, 5 and Compute Module range last week.
Article Summaries:
- A quiet revision of the Raspberry Pi 4 Model B (PCB 13a) now uses two LPDDR4 chips instead of a single module. The change is aimed at easing supply‑chain constraints and speeding production, with the second chip placed on the board’s underside and some passive parts relocated. The 32‑bit memory bus remains unchanged, so performance and compatibility are unaffected; however, a new boot‑loader version must be flashed for the board to be recognized. The updated revision is already in stock at approved resellers, and can be identified by a large square RAM chip on the bottom or a “© 2025” silkscreen near the CPU.
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