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5
Pack
Key Features
- 128GB Storage Capacity
- UHS-II / V90 / U3 / Class 10
- Maximum Read Speed: 310 MB/s
- Maximum Write Speed: 304 MB/s
Achieve pro-level performance with the 128GB Extreme PRO UHS-II SDXC Memory Card from SanDisk, which lets users capture 8K, 4K, and Full HD video as well as raw photos and continuous shutter bursts. This card features a storage capacity of 128GB and takes advantage of the UHS-II bus to support sequential read speeds of up to 310 MB/s and sequential write speeds of up to 304 MB/s. Thanks to the V90 Video Speed Class rating, write speeds are guaranteed not to drop below 90 MB/s.
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What is sequential read speed/write speed compared
What is sequential read speed/write speed compared to maximum read/write speed?
"Maximum speeds" refer to the fastest speeds the SanDisk 256GB Extreme PRO UHS-II SDXC Memory Card is capable of reaching, while "sequential speeds" pertain to the speeds while the card is performing a sequential read or write operation. In practice, sequential and maximum read and write speeds are effectively the same, as the maximum read or write speeds a card can reach would be achieved during sequential read or write operations.
Date published: 2026-07-07