CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins80% CONFIDENCEOverall confidence: 80%How well the pin's source and references back up its dates.Weighted average of how firmly 5 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or betterSK hynix's[1][3] newsroom release is datelined "Seoul, September 12, 2025" and TrendForce[5] reported it the same day (2025-09-12).
On 12 September 2025 SK hynix announced it had finished developing HBM4, the sixth generation of high-bandwidth memory, and prepared mass production, with double the bandwidth of the previous generation and more than 40% better power efficiency.
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