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Andy's avatar

Thank you for discussing these topics , Ive been trying to come up with a framework or mental model for how to think about the trade off between industrial resilience and peace time economics and it feels like this is the first thing that’s digging into this

Blissex's avatar

«However, memory production operates very differently from customized ASIC chips or GPUs from a leading-edge foundry. Memory chips are a standardized good with an oligopoly (there are three DRAM producers) that are roughly substitutable. [...] That is not how it functions at a customized leading-edge foundry.»

Actually that is how things used to work for leading-edge chips too; since decades ago for example both Intel and AMD produce the same type of high-end CPU chips because Intel's customers (in particular the military) insisted on having a second fully independent source and forced Intel to license AMD their high-end CPU architecture.

But business schools teach vendors to differentiate and build monopolistic moats and teach buyers that what matters is only the lower price in the short term rather than having multiple sources; so while high-end CPU chips are still mostly software-compatible between AMD and Intel in particular Intel which had a dominant position tried very hard to reduce compatibility and become single-source and as part of that they introduced a new single-source high-end CPU design called "Itanium" (which fortunately flopped).

«Samsung, TSMC, and Intel are not saying, “Here’s a standard. Apple, come to us with a standard and we’ll all figure out how to make it, and then you can substitute among all three of us.” That’s not how it works.»

Actually that is exactly what they did for mid-range CPUs based on the "ARM" standard architecture. Then Apple took the "ARM" standard and worked hard to differentiate it.

«Practically, what does it mean to have dual supply for an AMD or Nvidia? The most sense is to have one chip fabricated at one foundry, another model at another foundry»

When Intel was dominant they built many foundries by *exactly* replicating a model foundry into several others. That provided more capacity (with which they hoped to destroy AMD as an independent source) but not much extra resilience.

«When I was at SK Hynix, I found it fascinating that the CEO didn’t want to exceed a certain market share for customers like Dell for average server DRAM. They wanted customers to have supply resilience through other suppliers, which is very counterintuitive. That’s how they wanted to do business – they preferred long-term contracts. This works because it’s a standardized good with standards set at JEDEC.»

It works for a very different reason: they are prepared to accept (at least initially) a lower ROI on capital in exchange for long-term survival. That is pretty much much the secret of the "Asian Miracle" so far.

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