Unverified90% confidenceCautionTime unknown

如果只拍1080p或4K 30fps等中低码率视频，这张卡的超高写入速度完全用不上，性价比极低；它主要面向8K RAW、4K 120fps ProRes等超高码率连续写入场景

1

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90%

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Long-term

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Related Entities

ProGrade Digital CFexpress 4.0 Type B Cobaltproduct_sku 高速存储卡category

Related Claims

Unverified看重视频的应优先选支持4K 60fps且无严重裁切、无过热限制的机型；许多老款大底卡片机4K为30fps且录制几分钟即过热关机，不适合长时间视频拍摄84% similar Unverified采集上限为1080p60fps，不适合需要4K采集或1080p120fps采集的用户（如想录制高帧率PC游戏画面的场景）83% similar Unverified码率(bitrate)比分辨率更能决定画质：同为1080P，码率20Mbps以上才能在高速运动中看清对向车牌，很多低价机标4K但码率不足30Mbps，实际清晰度不如高码率1080P83% similar

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