You must be confused by CXMT’s marketing.
CXMT referred to their first generation DRAM as “1x”. But over time they had admitted it is equivalent to what the industry called “D20” that’s roughly 23nm node.
Their second HVM node, which CXMT and media calls “D1y” is actually what industry calls D1x (based on its bitline, wordline pitch). Based on the actual design pitch, this would be closer to 19nm node.
They currently developing their third generation DRAM node, 16-17nm, is still in development. As of today 2023 they are still trying to developing this. It’s not in production.
the media was duped by CXMT’s node naming before CXMT admitted to the industry on what they are really producing. If you are referring to some media report from 2021 then you are a bit outdated.
min the industry, we benchmark what fabs call their nodes by looking at and compare the actual design dimensions. My assessment and the article claiming 4 generation behind are based on this method.
but, buddy, you are free to believe in your own version of truth. I’m simply providing the standard assessment of the industry. Everyone else has the freedom decide which contradicting info to believe in. Just doing my part to share an “alternate” view.
D1x lack behind Samsung D1x doesn't mean D1y lack behind Samsung D1y