编辑“︁Apple A19”︁（章节）

== 设计 ==

=== CPU ===
Apple A19和A19 Pro采用包含2个性能核心和4个效率核心的6核CPU架构，一個五核（用於iPhone 17的A19）或六核（用於iPhone 17 Pro、iPhone 17 Pro Max、iPhone Air的A18）[[图形处理器|GPU]]，其中性能核心的运行频率高达4.26 GHz，效率核心的运行频率高达2.60 GHz。A19 Pro型号配备增强型缓存配置，并在性能核心上提升了前端带宽与分支预测能力。<ref name=":0">{{Cite web |title=Apple's new A19 Pro vs A19 comparison: new iPhone 17 chips have some major differences |url=https://www.tweaktown.com/news/107726/apples-new-a19-pro-vs-a19-comparison-new-iphone-17-chips-have-some-major-differences/index.html |website=TweakTown |date=2025-09-15 |language=en-US |access-date=2025-09-17 |archive-date=2026-01-28 |archive-url=https://web.archive.org/web/20260128043614/https://www.tweaktown.com/news/107726/apples-new-a19-pro-vs-a19-comparison-new-iphone-17-chips-have-some-major-differences/index.html |dead-url=no }}</ref>

A19的性能核心具有8MB的L2缓存，而效率核心具有4MB。A19 Pro将此数据增加至性能核心的16MB，以及效率核心的6MB。此外，A19芯片还包括一个12MB的系统级缓存，且在A19 Pro芯片扩展至32MB。<ref name=":1">{{Cite web |title=Apple's new A19 Pro vs A19 comparison: new iPhone 17 chips have some major differences |url=https://www.tweaktown.com/news/107726/apples-new-a19-pro-vs-a19-comparison-new-iphone-17-chips-have-some-major-differences/index.html |website=TweakTown |date=2025-09-15 |language=en-US |access-date=2025-09-17 |archive-date=2026-01-28 |archive-url=https://web.archive.org/web/20260128043614/https://www.tweaktown.com/news/107726/apples-new-a19-pro-vs-a19-comparison-new-iphone-17-chips-have-some-major-differences/index.html |dead-url=no }}<cite class="citation web cs1" data-ve-ignore="">[https://www.tweaktown.com/news/107726/apples-new-a19-pro-vs-a19-comparison-new-iphone-17-chips-have-some-major-differences/index.html "Apple's new A19 Pro vs A19 comparison: new iPhone 17 chips have some major differences"] {{Wayback|url=https://www.tweaktown.com/news/107726/apples-new-a19-pro-vs-a19-comparison-new-iphone-17-chips-have-some-major-differences/index.html |date=20260128043614 }}. ''TweakTown''. 2025-09-15<span class="reference-accessdate">. Retrieved <span class="nowrap">2025-09-17</span></span>.</cite></ref>

=== GPU ===
A19芯片采用基于全新Apple10架构的5核蘋果公司自研[[圖形處理器|GPU]] （80个执行单元、640个[[算術邏輯單元|ALU]]、5个集群），而A19 Pro则根据设备不同，提供5核和6核两种配置（96个执行单元、768个 ALU、6 个集群）。 <ref name=":2">{{Cite web |title=Apple's new A19 Pro vs A19 comparison: new iPhone 17 chips have some major differences |url=https://www.tweaktown.com/news/107726/apples-new-a19-pro-vs-a19-comparison-new-iphone-17-chips-have-some-major-differences/index.html |website=TweakTown |date=2025-09-15 |language=en-US |access-date=2025-09-17 |archive-date=2026-01-28 |archive-url=https://web.archive.org/web/20260128043614/https://www.tweaktown.com/news/107726/apples-new-a19-pro-vs-a19-comparison-new-iphone-17-chips-have-some-major-differences/index.html |dead-url=no }}</ref> iPhone Air采用配备5核GPU的A19 Pro芯片，而iPhone 17 Pro和Pro Max则配备完整的6核GPU配置。

A19系列的GPU支援硬體加速[[光線追蹤]]。相比較於前几代，Apple10架构引入了两倍的FP16性能，并在每个GPU内核中集成了称为“神经加速器”的专用的张量处理单元。这些单元针对机器学习工作負荷中的矩阵乘法运算，对其进行了优化，使A19 Pro上的GPU计算性能達到A18 Pro的大約4倍。此外，该架构还包含更新的动态缓存和统一图像压缩。<ref name=":3">{{Cite web |title=Apple Announces A19 and A19 Pro SoCs |url=https://morethanmoore.substack.com/p/apple-announces-a19-and-a19-pro-socs |website=More Than Moore |date=2025-09-13 |last=Smith |first=Ryan |access-date=2025-09-17 |archive-date=2025-12-07 |archive-url=https://web.archive.org/web/20251207020645/https://morethanmoore.substack.com/p/apple-announces-a19-and-a19-pro-socs |dead-url=no }}</ref>

=== 神经网络引擎 ===
A19 系列包含一个 16 核神经网络引擎，与 A18 系列相比，其内存带宽有所提高，并与 GPU 的集成神经网络加速器协同工作，以执行 AI 相关任务。

===記憶體===
A19系列搭載機型的記憶體容量依產品定位而異。iPhone 17與iPhone 17e配備8GB記憶體；iPhone Air、iPhone 17 Pro與iPhone 17 Pro Max則配備12GB記憶體。<ref name="iPhone17Specs">{{Cite web |title=iPhone 17 - Tech Specs |url=https://support.apple.com/en-us/125089 |website=Apple Support |publisher=Apple |language=en |access-date=2026-03-08}}</ref><ref name="iPhoneAirSpecs">{{Cite web |title=iPhone Air - Tech Specs |url=https://support.apple.com/en-me/125092 |website=Apple Support |publisher=Apple |language=en |access-date=2026-03-08}}</ref><ref name="iPhone17ProSpecs">{{Cite web |title=iPhone 17 Pro - Tech Specs |url=https://support.apple.com/en-us/125090 |website=Apple Support |publisher=Apple |language=en |access-date=2026-03-08 |archive-date=2026-02-20 |archive-url=https://web.archive.org/web/20260220162715/https://support.apple.com/en-us/125090 |dead-url=no }}</ref><ref name="iPhone17eSpecs">{{Cite web |title=iPhone 17e - Technical Specifications |url=https://www.apple.com/iphone-17e/specs/ |website=Apple |publisher=Apple |language=en |access-date=2026-03-08 |archive-date=2026-03-03 |archive-url=https://web.archive.org/web/20260303175512/https://www.apple.com/iphone-17e/specs/ |dead-url=no }}</ref>

===媒體功能===
依蘋果官方資料，A19系列所搭載機型支援[[HEVC]]、[[H.264]]與[[AV1]]等影片格式處理；其中A19 Pro所搭載的Pro機型亦支援[[Apple ProRes]]錄影。<ref name="iPhone17Specs" /><ref name="iPhone17ProSpecs" />

===連接能力===
A19系列搭載機型的無線連接能力並不完全一致。iPhone 17、iPhone Air與iPhone 17 Pro系列搭配Apple設計的N1無線網路晶片，支援[[Wi-Fi 7]]、[[藍牙]] 6與[[Thread (网络协议)|Thread]]；iPhone 17e則支援Wi-Fi 6與藍牙5.3。<ref name="Apple17NR">{{Cite web |title=Apple debuts iPhone 17 |url=https://www.apple.com/newsroom/2025/09/apple-debuts-iphone-17/ |website=Apple Newsroom |publisher=Apple |language=en |date=2025-09-09 |access-date=2026-03-08}}</ref><ref name="AppleAirNR">{{Cite web |title=Introducing iPhone Air, a powerful new iPhone with a breakthrough design |url=https://www.apple.com/newsroom/2025/09/introducing-iphone-air-a-powerful-new-iphone-with-a-breakthrough-design/ |website=Apple Newsroom |publisher=Apple |language=en |date=2025-09-09 |access-date=2026-03-08 |archive-date=2025-09-09 |archive-url=https://web.archive.org/web/20250909182618/https://www.apple.com/newsroom/2025/09/introducing-iphone-air-a-powerful-new-iphone-with-a-breakthrough-design/ |dead-url=no }}</ref><ref name="Apple17ProNR">{{Cite web |title=Apple unveils iPhone 17 Pro and iPhone 17 Pro Max |url=https://www.apple.com/newsroom/2025/09/apple-unveils-iphone-17-pro-and-iphone-17-pro-max/ |website=Apple Newsroom |publisher=Apple |language=en |date=2025-09-09 |access-date=2026-03-08 |archive-date=2025-09-09 |archive-url=https://web.archive.org/web/20250909181716/https://www.apple.com/newsroom/2025/09/apple-unveils-iphone-17-pro-and-iphone-17-pro-max/ |dead-url=no }}</ref><ref name="iPhone17Specs" /><ref name="iPhoneAirSpecs" /><ref name="iPhone17ProSpecs" /><ref name="iPhone17eSpecs" />

在行動通訊方面，iPhone Air與iPhone 17e搭配Apple設計的C1X數據機。蘋果表示，C1X相較前代C1具備更高的傳輸速度。<ref name="AppleAirNR" /><ref name="Apple17eNR">{{Cite web |title=Apple introduces iPhone 17e |url=https://www.apple.com/newsroom/2026/03/apple-introduces-iphone-17e/ |website=Apple Newsroom |publisher=Apple |language=en |date=2026-03-02 |access-date=2026-03-08}}</ref>

===安全性===
A19系列是首批支援蘋果「'''記憶體完整性強制執行'''」（Memory Integrity Enforcement，MIE）的A系列晶片。根據Apple Security Research，MIE結合了Apple Silicon硬體與作業系統安全機制，用於降低部分記憶體損毀漏洞的利用風險。<ref name="AppleMIE">{{Cite web |title=Memory Integrity Enforcement: A complete vision for memory safety in Apple devices |url=https://security.apple.com/blog/memory-integrity-enforcement/ |website=Apple Security Research |publisher=Apple |language=en |date=2025-09-09 |access-date=2026-03-08 |archive-date=2025-09-10 |archive-url=https://web.archive.org/web/20250910001905/https://security.apple.com/blog/memory-integrity-enforcement/ |dead-url=no }}</ref>