It doesn't. They're made in different factories with different processes.

Is it just about the factories though? I thought a big part of the current shortage was there literally not being enough silicon wafers to meet demand so much of that supply being redirected towards HBM led to a shortage of DDR4/DDR5 production.

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an hour ago | parent | prev | next [-]

[deleted]

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sysguest 2 hours ago | parent | prev [-]

...why not?

you can just sell the production line and re-purpose human workers for ddr5?

	▲	cowlevel an hour ago \| parent [-]
		I don't think you get how specialised these facilities are. They can't convert from one process to another, for the same reason they can't just build a new one on the new process. The physical building is not even slightly the bottleneck. If they can afford a new process they can afford a new building for it. There's a story where a fab company tried to open a fab in America but the chips kept coming out broken, and they tried everything and the only thing that worked was disassembling the whole factory and rebuilding it in the exact floor layout of their Taiwanese one. Sometimes they do salvage one or more machines as both processes use the same one. But that had better be worth shutting down the old process, financially.