Apple iPhone 18 Pro chips worth $1 billion stuck awaiting DRAM

Apple’s newest A20 Pro processors, valued at roughly $1 billion, are sitting idle at TSMC because insufficient DRAM prevents their packaging for the iPhone 18 Pro launch [1]. The bottleneck could curtail initial inventory and push online order wait times longer, a concern amplified by the absence of a lower‑priced base model this fall.

Production snag and its origins

Apple’s A20 Pro, the first chip built on TSMC’s N2 2 nm node, is ready in volume, but the wafers cannot move to the next step without DRAM supplied via TSMC’s new WMCM process [1]. The shortage stems from heightened demand for LPDDR5X memory by AI customers, leaving Apple competing for limited supplies [2]. Apple has reportedly tried to secure DRAM from existing partners and even approached Chinese supplier CXMT, but those talks have not yielded the needed volume [2].

Market impact and supply‑chain ripple effects

With the iPhone 18 Pro and Pro Max as the sole premium models this fall—Apple has delayed the base iPhone 18 to early 2027—the demand for the Pro line is expected to be higher than usual [1]. A constrained chip inventory could translate into thinner retail shelves and longer online order backlogs, echoing the supply‑chain strain that previously delayed MacBook Air shipments [2]. While Apple and its assemblers remain “confident” they can meet early demand, the memory shortage introduces uncertainty for the launch’s inventory targets [1].

Competitive landscape

The iPhone 18 Pro will launch alongside the ultra‑high‑price iPhone Ultra, positioning Apple’s premium segment against rivals such as Samsung’s S25 Edge, which offers comparable AI‑focused hardware. However, Apple’s reliance on a single high‑end model this season may amplify the impact of any supply shortfall, unlike previous cycles where a broader product mix absorbed inventory fluctuations.

What to watch

• DRAM delivery timeline – Confirmation from Apple or TSMC on when sufficient DRAM will arrive to clear the $1 billion chip backlog.
• Retail inventory levels – Early September reports on iPhone 18 Pro stock at Apple stores and major carriers.
• Potential schedule shift – Any official statement from Apple indicating a delay to the iPhone 18 Pro launch or a revised rollout plan.

The $1 billion chip backlog underscores how a memory shortage can become a choke point for flagship devices, raising questions about Apple’s ability to sustain its premium‑only launch strategy and whether similar constraints could affect future product cycles.