What is Memory cards: V30 / V60 / V90, A1 / A2, UHS-II?
Guaranteed minimum write speed and app performance class.
Short answer
'Up to 200 MB/s' is read speed — the V rating is the write guarantee.
Memory cards: V30 / V60 / V90, A1 / A2, UHS-II when buying a ssd, hard drive & memory card
Guaranteed minimum write speed and app performance class.
Why it matters: V30 handles normal 4K; V60/V90 for high-bitrate video and long RAW bursts.
Look for: 'Up to 200 MB/s' is read speed — the V rating is the write guarantee.
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