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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. HarHarVeryFunny · 1789935593 · focus · HN ↗
  Why would you want/need to?
  The advantage of HBM over regular non-stacked DRAM is memory bandwidth, which also requires a super-wide memory bus - 2048 bits wide for HBM4. Compare that to the 128 bit wide bus of a modern CPU.
  So to take advantage of it on the desktop, or anywhere else, you need that 2048 bit wide bus, and a processor capable of consuming 2-3 TB of data per second!
  These are not normal requirements, other than for a GPU.
  1. bobmcnamara · 1789961800 · focus · HN ↗
    Intel and IBM have already done this almost this with their wide eDRAM caches.
    The advantage in going wide is transferring cache lines rapidly, not the CPU bus interface.

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