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3
Pack
Key Features
- 256GB 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 256GB 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 256GB 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.
More DetailsSee any errors on this page?
What is sequential read speed/write speed compared
What is sequential read speed/write speed compared to maximum read/write speed?
If they are the same then why change the terminology from maximum to sequential?
Sorry - the explanation for sequential is from the SanDisk website - I didn't understand the process when I read it then, and I still don't understand the difference - but as noted, it's not different it's the same.
Date published: 2026-07-08