Apple A4
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Apple A4
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| Designer | Apple |
|---|---|
| Introduced | January 2010 (iPad); June 2010 (iPhone 4) |
| Process | 45 nm (Samsung) |
| CPU | 1 GHz Cortex-A8 (single core) |
| GPU | PowerVR SGX535 |
| Devices | iPad · iPhone 4 · iPod touch (4th) · Apple TV (2nd) |
| Successor | Apple A5 |
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The Apple A4 is Apple's first self-branded system-on-chip, introduced with the original iPad in January 2010 and carried into the iPhone 4 that June. Built on Samsung's 45 nm process around a licensed Cortex-A8 core (1 GHz in the iPad, ~800 MHz in the phone) with PowerVR graphics, it was less a radical design than a declaration: following the 2008 P.A. Semi acquisition, Apple would control its own silicon roadmap.
1 Legacy✎
The A4 began the annual Apple chip cadence and the tight chip-to-product tuning that became the program's signature. Every processor Apple ships today — through the Apple A19 and the M series — descends from the organization this chip stood up.