Unverified88% confidenceDecision RuleTime unknown
A1/A2认证针对随机读写（运行APP），仅在把卡当手机/掌机扩展存储运行程序时才有意义；纯拍照录像看U/V标即可，A2对相机无用
1
Sources
88%
Confidence
Long-term
Relevance
-
First Seen
Sources
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UnverifiedA1认证保证随机读4000IOPS/写1500IOPS，A2认证提升到读4000/写2000IOPS，A2主要利好手机运行APP和游戏加载，对相机连拍和视频录制几乎无差别——买卡放相机不必为A2溢价买单82% similarUnverifiedA2等级在安卓设备作为应用存储时随机读写性能有优势，但在运动相机中A2标识基本无额外意义，选购时不必为A2规格额外加价82% similarUnverifiedA2标准的随机读写(4K IOPS)明显优于A1，运行APP或作为Switch/安卓机运行盘选A2；但若仅作照片视频存储盘，A1与A2实际体验差异极小77% similarUnverifiedA1/A2应用性能等级仅对运行APP的设备（如Switch、安卓手机、树莓派）有意义，A2要求随机读4000IOPS/写2000IOPS，纯拍摄设备无需为A2溢价77% similarUnverifiedA1/A2应用性能等级是针对手机/掌机APP随机读写优化的指标，A2卡在Steam Deck、Switch等运行程序场景表现更好，但对相机连续读写无帮助，选卡需分清用途74% similar
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