Re:New Raspberry Pi Model B+
by boris on Wednesday March 14, 2018 @08:05AM
(#16584112)
Right, RAM is part of the SoC... that probably makes the idea pretty much a no-go.
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The RAM was only integrated on the SoC on earlier models (called a package-on-package, PoP -- see https://elinux.org/RPi_Hardware#Components)
Later versions (I think starting with RPi 2) have a separate DRAM chip on the bottom side of the PCB.