MacBook Neo Teardown: A18 Pro Hits M3 Speeds, Then Throttles 87% Under Load

Apple’s $599 MacBook Neo, launched March 2026, swaps the M-series for the iPhone 16 Pro’s A18 Pro chip on TSMC N3E. Cold Geekbench 6 runs landed at 3,569 single-core and 8,879 multi-core, slotting between the M3 and M4 and beating Intel and Qualcomm rivals in the same price bracket by roughly 40 percent. The fanless aluminum chassis is the catch: after a five-minute all-core stress test, single-core performance collapsed to 476, an 87 percent drop, and CPU utilization fell 64 percent in just 15 seconds once the chip hit its 105°C ceiling.

Multi-core scores converged near 1,300 under both AI-assistant workloads and post-thermal-soak conditions, suggesting the Neo has a single sustained floor regardless of whether memory or heat is the bottleneck. To hit the price, Apple stripped MagSafe, Thunderbolt, Wi-Fi 7, the backlit keyboard, P3 color, and the higher-resolution webcam, and capped one USB-C port at USB 2.0 speeds. RAM is fixed at 8GB with no upgrade path, which the author flags as the real ceiling on the machine’s usefulness.

The economics rest on Apple’s vertical integration: in-house silicon design, direct TSMC negotiation, and amortization across 230 million iPhones a year, a supply chain no competitor can match. The author expects a 12GB refresh within a year and views the tight memory envelope as a useful forcing function against macOS bloat, even as the thermal cliff makes the Neo a burst-oriented machine rather than a sustained workhorse.