Apple A5X

The Apple A5X is a 32-bit (SoC) designed by Apple and manufactured by Samsung. Apple used it only in the 3rd-generation iPad. The A5X is a high-performance variant of the Apple A5. Apple claimed during their media event on March 7, 2012 that the quad-core graphics processing unit (GPU) in the A5X is two times faster than the GPU in the A5, as the A5X GPU contains two more cores than the dual-core version GPU in the A5.

The last operating system update Apple provided for a mobile device containing an A5X (third-generation iPad cellular models) was iOS 9.3.6, which was released on July 22, 2019.

Design
Apple designed the A5X chip specifically for the third-generation iPad to provide the additional graphical performance it required for its new Retina display. The A5X chip features a dual-core 45 nm CPU with a clock rate of 1 GHz, and a quad-core 32 nm  GPU with a clock rate of 250 MHz. Compared to the A5, the memory interface of the A5X is twice the size. The A5X memory interface subsystem utilizes four 32-bit wide memory controllers.

Unlike the Apple A4 and the A5, the A5X uses a metal (along with thermal paste) to cover the flip chip underneath. The die takes up 162.94 mm2 of area —a 36.5% increase in area used over the 119.32 mm2 die of the S5L8940 version of the A5. The A5X does not use the (PoP) method of installation to support RAM—RAM is found externally from the A5X chip.

Products featuring the Apple A5X

 * iPad (3rd generation)