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TSMC revealing details about next gen A14 node

129 points · 56 comments · osnium123

  1. aurareturn · · focus · HN ↗
    Chip density increase is slowing down. Since N10, density scaling has been 60-80%. N3 to N2 is only 20%. And now N2 to A14 is also only 20%.
    1. osnium123 · · focus · HN ↗
      Is the increase in wafer cost higher than the density increase? If so, that means that the cost per transistor is also going up.
      1. xenadu02 · · focus · HN ↗
        If we exclude short-term shortages then no. The cost to make a wafer hasn't really changed. Larger wafers improved costs but that's about it AFAIK.

        Feature sizes have been shrinking unevenly for two decades now combined with the overall slowdown in improvements. Transistors themselves are FinFET geometry and something like 15-30 atoms thick and maybe 80-100 across. There ain't much juice left to squeeze in terms of size but perhaps we'll figure out how to reduce leakage (heat).

        Physics hates the very large and the very small. The large get the tyranny of volume scaling + general relativity. The small have their entire concept of reality smashed by quantum mechanics.

        1. xenadu02 · · focus · HN ↗
          I'm saying Fujitsu never made any real attempt to sell their product to anyone except very large companies with purchasing departments. Thus it is little wonder they never really got much in the way of sales.

          Maybe that strategy works in Japan or Asia but it didn't work here and I think that's a shame because we could have used the competition.

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