Taiwan's memory chip makers posted huge August sales gains on AI demand, lifting the market — good news for chip investors, though the rally is uneven.

• Nanya Technology's August sales hit another record, up sharply from a year ago, with sales for the year so far up more than sixfold.
• Nanya, Macronix and Winbond all rose, while some smaller memory names like Elite Semiconductor and Transcend slipped.
• Research firm TrendForce sharply raised its forecast for the global memory market, now seeing it top $1 trillion by 2027.
• AI is the driver: memory has shifted from a boom-and-bust business to a must-have part of every AI build-out, pushing prices up.
• Cooling-component makers also jumped, and Taiwan's main index bounced back after a weak session the day before.

Outlook: Memory prices and revenues look set to keep climbing as AI spending shifts toward inference, though the sector's stock moves may stay choppy.