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Samsung is expected to more than double output of its HBM4 and HBM4E DRAM

562 points · 458 comments · giuliomagnifico

fooker · 1789929721 · focus · HN ↗
What's the main blocker (other than the current inflated cost) for using HBM instead of DRAM as the primary memory for consumer electronics?
1. reliabilityguy · 1789930675 · focus · HN ↗
  HBM is a stack of DRAMs, so there is no “instead”.
  1. buckle8017 · 1789931938 · focus · HN ↗
    The vias to enable stacking is a significant amount of the die area.
    saltcured · 1789933961 · focus · HN ↗
    If they're talking about production capacity, that is some product of die area and process steps, right? It doesn't have to be 3x die area, just 3x lower factory throughput for the same number of functioning memory bits.
    buckle8017 · 1789945737 · focus · HN ↗
    HBM is less dense at a water scale than DDR because of all the vias, but each memory but is as dense or denser.
    You make HBM instead of DDR and the number of bits you're making goes down.
    It's really that simple.

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