Qualcomm building custom 3D DRAM for AI phones
Qualcomm is jointly developing custom DRAM with CXMT, formally ChangXin Memory Technologies, Chinaβs fourth-largest DRAM producer. Qualcomm is also working with GigaDevice on a discrete smartphone NPU targeting Chinese brands.
The NPU delivers roughly 40 TOPS of compute. Itβs paired with 4GB of customized 3D DRAM manufactured by CXMT, using TSV and hybrid bonding stacking to push memory bandwidth beyond what standard LPDDR5X can offer.
Shipments are expected in late 2026 or early 2027, aimed at devices priced above RMB 4,000 (~ $585) to 4,500 (~ $660). Thatβs not a minor spec tweak, but a purpose-built AI memory stack for mid-to-premium Android phones.
CXMT already covers around 30% of the Chinese smartphone market with its LPDDR5X production. The capacity exists, the manufacturing knowledge exists and now thereβs a Qualcomm-backed design riding on top of it.
Samsung, SK Hynix, and Micron have been operating in a sellerβs market for mobile memory while they prioritize AI server contracts. A qualified CXMT with custom designs in hand is pressure, even if it never ships a single unit outside China.
Samsung sits in an uncomfortable position here
Samsung is one of the companies causing the mobile memory squeeze by chasing AI server contracts, and one of the Android ecosystem players that suffers when memory costs push OEMs toward cheaper silicon choices.
The company could have moved on custom DRAM partnerships for mobile AI. Now, Qualcomm is building an alternative stack with Chinese suppliers, targeting the exact price tier where Samsungβs Galaxy A and mid-range lines compete hardest.
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