苹果A13性能曝光：AI大爆发 CPU超大部分笔电
近日，外媒放出了2019款iPhone（iPhone 11）的性能预测。相比现款iPhone XS、XS Max，新款iPhone的CPU性能将稳步提升，AI性能将有大幅提升，但GPU的性能提升有限。
报道称，台积电将再次成为苹果A13芯片的唯一供应商，该芯片采用7nm极紫外光刻（EUV）的新工艺，其晶体管数量与A12X几乎相同。但可能会从2个高性能核心+4个高效能核心，升级到3个性能核心+4个能效核心。
近些年，苹果A系列处理器的单核性能提升非常稳定，A13有望通过架构调整、峰值频率来进一步提升，其单核Geekbench 4跑分有望超过5200分，多核性能还难以预测，可能会超过16000分，这将超过现有安卓旗舰，甚至大多数轻薄笔记本电脑的处理速度。
不过外媒预计，A13在GPU性能上不会有太大提升，甚至可能会被新一代高通骁龙芯片超越。
去年，苹果A12的AI性能已经超过预期。A11的神经引擎实现每秒6000亿次运算，而A12的速度提高了约8倍，达到每秒5万亿次运算。外媒预计，A13的AI性能将在A12的基础上继续提升3-5倍，有望达到或接近每秒20万亿次运算。
事实上，从拍出更好的照片、视频，到AR增强现实应用，Siri的进化，未来机器学习和人工智能将是提升iPhone体验的关键因素。A系列处理器更加侧重AI性能的加强，这也符合iPhone的未来发展策略。
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