Apple unveiled the M4 chip at its May iPad event, designed to power the latest line ofsleek and lightweight iPad Pro tablets . This new chip delivers performance levels comparable to the M3 processor found in the MacBook Air, with a substantial enhancement in AI capabilities.

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Interestingly, the iPad Pro has leapfrogged directly from the M2 to the M4 chip, bypassing the M3 entirely.

The M4 is engineered using a "second-generation" 3-nanometer process, which Apple claims to be even more power-efficient than its predecessors. This advanced technology allows the M4 to match the performance of the Apple M3 while achieving significantly better efficiency.

A noteworthy feature of the M4 is its new display engine, which is optimized for the iPad Pro's new tandem OLED display. This supports ProMotion technology, enabling variable screen refresh rates ranging from 10 to 120Hz. This not only reduces the workload on the tablet but also enhances battery life, making the new iPad Pro more efficient and versatile, according to Apple.

The CPU of the M4 chip has also received a significant upgrade, featuring four performance cores and six efficiency cores. These cores benefit from improved branch prediction and expanded decode and execution engines, which contribute to faster overall performance. 

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Additionally, the inclusion of next-generation machine learning accelerators enhances the chip's capability to handle a diverse range of tasks. These accelerators are instrumental in improving the accuracy of features such as Face ID and QuickType suggestions, as well as enhancing the ability to categorize photos based on their subject matter.

The M4 chip also introduces a new 10-core GPU, which incorporates next-generation architecture featuring dynamic caching. This technology, which was also a highlight of the M3 chips, allows the GPU to efficiently allocate the right amount of memory needed for specific tasks. 

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Additionally, the M4 marks a significant advancement in iPad graphics capabilities with the introduction of hardware-accelerated mesh shading and ray tracing. This is the first time such technologies are available on the iPad, elevating the quality of graphics for gaming and enhancing professional rendering performance. In fact, in applications such asOctane , rendering performance is up to four times better compared to previous models. 

This GPU upgrade should not only boosts the iPad's performance in routine tasks but also in demanding graphic-intensive applications.

On the efficiency front, particularly in terms of performance-per-Watt -- which is crucial for devices primarily running on battery power -- Apple's M4 chip sets a new standard. Apple claims that the M4 delivers the same level of performance as the M2 chip but consumes only half the power. Moreover, when compared to the latest PC chips found in thin-and-light laptops, the M4 achieves the same performance using just a quarter of the power.

Additionally, the M4 chip features a new 16-core Neural Engine capable of processing 38 trillion operations per second. This powerhouse component, when integrated with the CPU and GPU, in Apple's words, is an "outrageously powerful chip for AI." According to Apple, it surpasses any Neural Processing Unit (NPU) currently available in AI PCs, setting a new benchmark for AI processing capabilities in consumer electronics.

The newM4 iPad Pro comes with 11-inch or 13-inch displays , and is available pre-order today, with tablets shipping May 15. 

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