WikiNow lets you discover the news you care about, follow the topics that matter to you and share your favourite stories with your friends.

© WikiNow

The Apple A4 is a 32-bit package on package system-on-a-chip designed by Apple Inc. and manufactured by Samsung. It combines an ARM Cortex-A8 CPU with a PowerVR GPU, and emphasizes power efficiency. The chip commercially debuted with the release of Apple's iPad tablet; followed shortly by the iPhone 4 smartphone, the iPod Touch , and the Apple TV . It was superseded by the Apple A5 processor used in the iPad 2 released the following year, which was then subsequently replaced by the Apple A5X processor in the iPad .

Apple A4
Apple A4 Chip.jpg
The A4 processor
Produced From April 3, 2010 to September 10, 2013
Designed by Apple Inc.
Common manufacturer(s)
Max. CPU clock rate (iPhone 4, iPod Touch 4G) 800 MHz to (iPad) 1 GHz
Min. feature size 45 nm
Instruction set ARMv7-A
Microarchitecture ARM Cortex-A8
Product code S5L8930X
Cores 1
L1 cache 32 KB instruction + 32 KB data
L2 cache 512 KB
Predecessor Samsung S5L8922
Successor Apple A5
GPU PowerVR SGX 535
Application Mobile

The Apple A4 is a 32-bit package on package (PoP) system-on-a-chip (SoC) designed by Apple Inc. and manufactured by Samsung. It combines an ARM Cortex-A8 CPU with a PowerVR GPU, and emphasizes power efficiency. The chip commercially debuted with the release of Apple's iPad tablet; followed shortly by the iPhone 4 smartphone, the iPod Touch (4th generation), and the Apple TV (2nd generation). It was superseded by the Apple A5 processor used in the iPad 2 released the following year, which was then subsequently replaced by the Apple A5X processor in the iPad (3rd generation).