A12Z Chip in 2020 iPad Pro Confirmed to be Recycled A12X
The 2020 iPad Pro models are equipped with an A12Z processor that is the same as the A12X processor in the 2018 iPad Pro models but with an extra GPU core enabled, TechInsights confirmed today.
Speculation that Apple was using the same chip began shortly after the new iPad Pros launched and benchmarks found little in the way of performance improvements.
Apple didn't highlight changes to CPU performance, but there is one difference - the A12Z features an 8-core GPU, while the A12X has a 7-core GPU.
Information provided in March by TechInsights suggested that the A12X was simply an 8-core GPU chip with one GPU core disabled, indicating the A12Z is a re-binned A12X with that latent GPU core enabled.
At the time, TechInsights said that it planned to conduct a floorplan analysis to determine whether there are any differences between the A12X and the A12Z, which has now been completed, and the GPU chips are the same. A full report on TechInsights findings will be available on its website to those with a subscription.
It is not unusual for chip manufacturers to disable one core of a processor when a chip isn't meeting yield levels, and that's perhaps what happened with the A12X. The manufacturing of the chip has now improved enough that yields have gotten better and all 8 cores are functional, resulting in the A12Z chip.
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