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

562 points · 458 comments · giuliomagnifico

HarHarVeryFunny · 1789937583 · focus · HN ↗
On a related note, I was reading yesterday that apparently the real bottleneck for Chinese production of AI accelerators is HBM production, not processors or ASML equipment.
The lack of ASML EUV machines certainly hurts, and pushing DUV so hard results in abysmal yields of good chips, but you can compensate by running more wafers or making smaller chips, and the net result is that Huawei's Ascend production volume is limited by CXMT's HBM capacity not processor dies.
The problem is that HBM manufacture requires many steps (die thinning, via drilling, plating, alignment) where the equipment used by everyone else (Samsung, SK Hynix, Micron) is also blocked by sanctions, so the Chinese are having to develop all of this themselves too, which they have, but yields are currently low, even when using shorter HBM stacks.
1. jacquesm · 1789951954 · focus · HN ↗
  The only thing the West is achieving here is that sooner or later China will be able to compete on their own terms rather than ours. It may buy some time but the end result is very predictable.
  1. audunw · 1789971327 · focus · HN ↗
    What the West is doing is forcing China into a situation which is impossible to sustain when their economic dividend runs out. Especially considering these investments are fuelled by an extremely high level of debt.
    And it’s not a given that they’ll catch up. I think it’s fair to say that their development of jet engines is on track to be obsolete before they’re competitive.
    They may in principle have established the technologies to be self sustained but that’s only relevant and sustainable if they develop an economy based on domestic consumption rather than exports. Which they are struggling with as well.
    chii · 1789972808 · focus · HN ↗
    > their economic dividend runs out
    i dont think it will - they still have a chokehold on battery production (which implies dominance in the EV sector), and they also control the vast majority of all rare earths. The chinese gov't can subsidize chip research/development with these other sectors that are dominating.
    The west is the one that need to watch out for their own economic dividend running out from the past century.
    Sammi · 1790079510 · focus · HN ↗
    "Economic dividend" really means "Demographic dividend". It's when your fertility rate decreases but your total population isn't decreasing yet, so you get more people to work more as they spend less time as parents. This of course is a self perpetuating cycle and ends in demographic collapse. China's population is now decreasing. The West's population is still growing. China is in the most literal sense dying. It's what you get for having a one child policy for 50 years. But hey, for a beautiful moment in time they really created a lot of shareholder value.

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