When Apple launched the MacBook Neo in early March at $599, many analysts praised its pricing but wondered how Apple could afford it. The answer, it turns out, was creative engineering: the MacBook Neo runs on A18 Pro chips with a five-core GPU โ€” chips that would have otherwise been discarded during iPhone 16 Pro production because one of their six GPU cores failed quality checks. By redirecting these imperfect but perfectly functional chips into a laptop, Apple turned waste into revenue. The strategy worked almost too well.

Binning itself is not exotic. Every leading-edge wafer comes off the line with defects scattered across it, and chipmakers have recovered value for decades by switching off the affected block and selling the part into a lower tier. Apple has done it in the Mac before: the cheapest M1 machines shipped with a seven-core GPU rather than eight for exactly this reason. What is unusual here is the scale of the reuse โ€” an entire product line whose supply depends on another line's defect rate.

The MacBook Neo is now Apple's fastest-selling laptop in years. Delivery estimates across Apple's online stores have ballooned to two to three weeks in the United States and most other countries. The waitlist is growing. And there lies the problem: Apple is running out of chips.

A supply chain elegant in theory, fragile in practice. The A18 Pro chip inside the MacBook Neo is manufactured using TSMC's second-generation 3nm process, known as N3E. This production line is currently running at full capacity, primarily to meet demand for the iPhone 16 Pro. Apple's binned-chip approach assumed there would always be enough failed chips to funnel into the MacBook Neo โ€” but the MacBook Neo is selling faster than faulty chips can accumulate.

That dependency carries a trap that has nothing to do with demand. Yields on a process node improve as it matures โ€” that is what maturity means in a fab โ€” so the stream of partially defective A18 Pro dies should be thinning on its own, month by month, whether or not the MacBook Neo sells a single extra unit. A product built on manufacturing failures gets scarcer precisely as the factory gets better at its job.

To replenish its supply, Apple would need to pay TSMC a premium to restart or expand A18 Pro production โ€” eating directly into the MacBook Neo's already thin margins. According to Taiwan-based analyst Tim Culpan, Apple is facing what he describes as a "massive dilemma": either accept lower margins by paying for extra production runs, or let demand outpace supply and risk frustrating customers.

The margin arithmetic is what gives Culpan's framing its edge. A recovered die carries almost no incremental cost, because the wafer it came from was already paid for by the iPhone that needed the good chips beside it. A purpose-built die carries the full cost of the wafer, the packaging and the test. Ordering fresh A18 Pro silicon for a $599 laptop would not shave the MacBook Neo's margin so much as remove the premise the product was designed around.

Timing compounds it. Capacity at a leading-edge foundry is booked well in advance, and a wafer takes months to travel from start to finished, tested chip. Even if Apple committed today to extra A18 Pro runs, the parts would not reach assembly lines in time to clear a queue measured in weeks. Decisions at this level are made a quarter or two before the shortage becomes visible in a store.

A third option exists: prioritize chip allocation. Apple could redirect some A18 Pro chips from iPhone 16 Pro inventory to the MacBook Neo โ€” but this would require cutting iPhone production, an unthinkable move as the company heads into its next major iPhone cycle.

The irony is not lost on the industry. Apple designed the MacBook Neo specifically as a margin-optimized product: use what would otherwise be waste, sell it at a price that undercuts the competition, and capture a new segment of entry-level users. The plan succeeded beyond expectations, but its success has now become a structural constraint.

Looking further ahead, Apple is reportedly already planning the MacBook Neo's successor. The next generation is expected to ship with the A19 Pro chip from the iPhone 17 Pro lineup, which should bring 12GB of unified memory and a new level of performance. But that product is not expected until 2027 โ€” leaving Apple to manage a supply crunch for the better part of a year.

It is worth remembering how long Apple went without a cheap laptop at all. The entry point to a Mac notebook sat around a thousand dollars for most of the past decade, ceding schools and first-time buyers to Windows machines and Chromebooks. Selling out of a sub-$600 Mac is a better problem than not competing there โ€” but only if the supply can be made repeatable.

The open question is whether the MacBook Neo was a clever one-off or the first of a line. A second generation built the same way would settle it, confirming that Apple means to treat recovered iPhone silicon as a standing Mac strategy and to accept the same constraint each time. The successor and its chip are reported, not confirmed.

For consumers shopping now, the advice is pragmatic: if you want a MacBook Neo, order sooner rather than later. If stock tightens further, the short wait today could become a much longer one tomorrow.