The Pacific Hardware Tape (#4): Samsung's ₩10.8T Memory Print, HBM4 Price Shock ($4.90/Gb) & 120kW Liquid Cooling

DISPATCH #4 HARD SIGNAL BLUEPRINT
Seoul checks confirm memory margins breached 40% as standard DRAM inventories plunged below 10 days. Opening 2027 contract quotes for HBM4 surged to $4.50–$4.90/Gb (>3x HBM3e levels). Foxconn/CCI completed 24-hr pressure loop tests with 99.4% zero-leak yields on 120kW racks. 28-layer ABF substrate lead times blowout to 56–78 weeks.
HBM4 Opening ASP$4.50–$4.90 / Gb
Zero-Leak Test Yield99.4%
ABF Substrate Lead Time56–78 Weeks
Server DRAM Inventory<10 Days
$NVDA$TSM$MU$VRT$AMD
