iPhone 18 Pro Leak Points to A20 Pro Chip With Better Cooling, Bigger Neural Engine, and New Packaging
A fresh look at what is believed to be the iPhone 18 Pro logic board is giving us an early idea of how Apple may be redesigning its next-generation A20 Pro chip. The biggest change appears to be a move to WMCM, or Wafer-Level Multi-Chip Module packaging, replacing the older Package-on-Package approach used with the A19 Pro.
This shift may sound technical, but it could have a major impact on real-world performance. With the new packaging layout, the DRAM is reportedly positioned beside the chipset rather than stacked on top of it. That change should help heat escape more efficiently, allowing the iPhone 18 Pro and iPhone 18 Pro Max to sustain high performance for longer periods.
Better thermals could be one of the most important upgrades for the A20 Pro. Recent high-end iPhones have pushed Apple’s custom silicon to impressive levels, but keeping temperatures under control has become increasingly difficult. Even with improved cooling hardware such as vapor chambers, demanding tasks can still push the chip toward thermal limits. By changing the chip packaging itself, Apple may be tackling the issue at a deeper hardware level.
The leaked schematic-style image does not appear to show an actual production motherboard, but it does provide enough layout detail to suggest that Apple is making meaningful internal changes. The move to WMCM packaging could make the A20 Pro more efficient under heavy workloads, including gaming, video processing, camera features, and on-device AI tasks.
Another notable detail is that the A20 Pro may keep roughly the same physical package size as the A19 Pro. That matters because the chip is expected to be built using TSMC’s advanced 2nm process, which is likely to be expensive to manufacture. By maintaining a similar size, Apple may be able to control production costs while still delivering a more advanced chip.
Apple has already shown a strong ability to reduce chip size without giving up performance. The A19 and A19 Pro reportedly used smaller dies than their predecessors, helping Apple balance power, efficiency, and manufacturing cost. The A20 Pro appears to continue that strategy, using smarter packaging and internal design improvements rather than simply making the chip larger.
The leak also suggests that the Neural Engine has been expanded. This would make sense as Apple continues to push deeper into on-device artificial intelligence. A larger Neural Engine could improve AI-related features such as Siri enhancements, image processing, voice recognition, text generation, and other machine learning tasks handled directly on the iPhone.
On-device AI is expected to be a major selling point for future iPhone models, and the iPhone 18 Pro could be designed to handle a broader range of AI features without relying heavily on cloud processing. That would help improve privacy, speed, and responsiveness for supported features.
There is also a claim that the A20 Pro may support LPDDR6 memory with a 96-bit bus width. If accurate, this could improve memory bandwidth and help with demanding tasks, especially AI workloads and high-end graphics. However, Apple usually adopts newer memory standards carefully and gradually, so this detail should be treated with caution until more reliable confirmation appears.
Overall, the early A20 Pro leak paints an exciting picture for the iPhone 18 Pro lineup. The combination of WMCM packaging, improved thermal design, a larger Neural Engine, and a possible move to faster memory could make Apple’s next Pro iPhones significantly better at sustained performance and artificial intelligence tasks.
For now, these details remain unofficial, but they offer a strong preview of what Apple may be preparing. If the information proves accurate, the iPhone 18 Pro and iPhone 18 Pro Max could bring one of the most important internal chip upgrades in years, not just through raw speed, but through better efficiency, smarter cooling, and stronger AI performance.
