Re:StarFighter 16 inch: 4K Coreboot/Ryzen Linux laptop
by brookst on Sunday February 12, 2023 @11:45AM
(#34764265)
Note that modern apple ram is not just soldered but actually in the SoC package. Sucks for upgradability, but that’s how they get 400Gb/s UMA speeds.
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Re:StarFighter 16 inch: 4K Coreboot/Ryzen Linux laptop
by wtallis on Sunday February 12, 2023 @04:31PM
(#34767219)
In-package RAM vs soldered on the motherboard next to the SoC package makes no difference to the bandwidth: GPUs take the latter approach to achieve equal or higher bandwidth. In either case, having a memory bus wider than 128 bits is a major factor in offering higher bandwidth than mainstream platforms. (Wide memory buses are easier to lay out on a PCB when routing to BGA memory packages than [SO]DIMM slots.)