Thread

Fujitsu launches made-in-Japan next-generation CPU FUJITSU-MONAKA

633 points · 254 comments · my123

rwmj · 1789652371 · focus · HN ↗
It's Arm based, although they barely mention that.
1. minimeow · 1789653302 · focus · HN ↗
  Yes the lack of transparency on ARM architecture and the obfuscation of the RAM capacity with just the slot information is annoying. Not sure if it is deliberate to sell this at a premium to "mainframe" customers or whether its just their marketing folk not being on the ball. Fascinated by the fact Japan has a 2nm process node but I suspect that too is marketing. Perhaps the 2nm portion of the chip is done at TSMC and the rest of the package done in Japan or something like that. It's not like there's a plethora of 2nm Fabs around the planet to choose from.
  1. imtringued · 1789655688 · focus · HN ↗
    It looks to me like it is an AI optimized HPC CPU and while HPC CPUs are actually quite fast, they are not particularly well suited for transformer based neural networks.
    It's weird that they don't give out any of the interesting numbers like number of memory channels, how much SRAM they have (CPUs tend to have more of it) or what their expected performance is going to be.
    adrian_b · 1789660680 · focus · HN ↗
    They did a detailed presentation at Hot Chips.
    See e.g.:
    <a href="https://chipsandcheese.com/p/hot-chips-2026-fujitsus-monaka-cpu" rel="nofollow">https://chipsandcheese.com/p/hot-chips-2026-fujitsus-monaka-...
    They have provided far more details than companies like Apple or Qualcomm.
    imtringued · 1789715776 · focus · HN ↗
    Looks good for HPC but the AI performance is only good against other CPUs. Even Intel GPUs can beat the quoted numbers within that power envelope.

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