-22 points
They do make the most of it though. Soldered RAM can be much faster than socketed RAM, which is why GPUs do it too.
19 points
My knowledge of electrical engineering has not shown that solder increases performance. Do you have some more information on this?
4 points
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Solder doesn’t increase performance (the memory is soldered to something regardless, either the main board or an expansion board), but shorter physical distances mean lower latency and less power to transmit the same data. LPDDR4/5X are designed to take advantage of this additional efficiency.
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