Apple They never publish the complete technical specifications of their products, but simply tell consumers that their products are very awesome. So we can only get the details through disassembly, performance test or the information from the cooperative manufacturer, which we learned through disassembly before iPad Pro The memory of is 4GB, and now it uses A9X More details were discovered.

Chipworks and AnandTech made unremitting efforts on Thanksgiving Day to obtain the scan map of A9X, so as to find more technical specifications. It is confirmed that TSMC's 16nm FinFET process is used. The chip area is about 147 mm2, slightly larger than A6X and A8X, but still smaller than A5X.

Among them, 12 GPU cores of the Imagination PowerVR 7 series occupy the majority of the chip area. This design has not been shown on the product roadmap of Imagination. The A9 GPU is a 6-core Imaging PVR GT7600, but the A9X GPU is between the 8-core GT7800 and the 16 core GT7900, so this GPU has no official name. When these 12 cores are combined with the 128 bit memory bus, they can provide a surprising 51.2GB/s memory bandwidth.

At the same time, the A9X does not have L3 cache. AnandTech said that the reason may be that the processor has sufficient memory bandwidth, or simply that Apple does not need to save power through L3 cache. Anyway, Apple will not tell us the reason, so we can only guess.

Picture from phonearena

Reward

Scan WeChat and reward the author