UHS-II SD cards are worth considering if your camera supports UHS-II and faster burst handling or file transfers would improve your workflow. If your camera supports only UHS-I, a UHS-II card will not give it the UHS-II interface speed. For video, check the speed class required for your chosen recording mode: the UHS label and the V-class rating describe different performance characteristics.
What UHS-II changes
UHS-II is a bus interface: it describes how a compatible SD card and host device communicate. The SD Association specifies maximum interface rates of 104 MB/s for UHS-I and 156 MB/s full duplex or 312 MB/s half duplex for UHS-II. UHS-II uses a second row of pins and two data lanes. These are interface ceilings, not guaranteed card speeds or typical camera results. Actual maximum card speed and a device’s average write speed vary with the card, host device and operation. SD Association: SD bus speed
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A UHS-II card can be used in a host that supports UHS-I, UHS-II or SD Express, but it operates according to the interface supported by the host. The SD Association recommends matching a card to the fastest interface the device supports. SD Association: choosing an SD memory card
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The UHS-II label identifies the bus interface. Video Speed Class labels such as V60 and V90 indicate minimum sequential performance under defined conditions—60 MB/s and 90 MB/s, respectively. Those minimums matter when a camera must sustain writes during video recording. A V-class number is not a maximum transfer rate, and it does not by itself tell you whether a card is compatible with your camera’s recording modes. SD Association: SD speed classes
#1 Best Overall
- Speeds up to 280MB/s read, up to 120MB/s write
- Shoot stunning videos in 1080p Full-HD, and 4K
- Save time with a dramatically accelerated workflow
- Backwards-compatible at the highest UHS-I speeds
- Rigorously tested to ensure performance, quality, compatibility, and reliability
The SD Association gives broad examples: U3/V30 for Full HD to 4K recording, V60 for 4K UHD to 8K, and V90 for 8K UHD. These are general illustrations, not a substitute for the card requirements in your camera manual. The appropriate class depends on the specific camera and recording mode. SD Association FAQ
When a UHS-II card is worth considering
Your camera supports UHS-II and you shoot bursts
If your camera supports the UHS-II interface, a compatible card may help with workflows that involve sustained bursts or clearing the camera’s buffer. The standards’ maximum interface rates alone cannot predict how much faster a particular camera and card will perform. Check the camera manual and product specifications rather than treating the bus-rate ceiling as a real-world result.
Rank #2
- Speeds up to 280MB/s read, up to 120MB/s write
- Shoot stunning videos in 1080p Full-HD, and 4K
- Save time with a dramatically accelerated workflow
- Backwards-compatible at the highest UHS-I speeds
- Rigorously tested to ensure performance, quality, compatibility, and reliability
You regularly move large files to a computer
A faster interface can matter during offload if both the card reader and the computer connection support the relevant speeds. A UHS-II reader is a separate consideration for computer transfers; it does not make a camera capture faster. If your computer lacks a suitable SD slot, the SD Association recommends using a reader or adapter. SD Association FAQ
Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsYour recording mode requires a higher minimum class
For video, choose a card that meets or exceeds the speed class specified for the exact recording mode in the camera manual. UHS-II and V60/V90 answer separate questions: the first concerns the interface, while the latter describe minimum sequential performance. Do not assume that buying a UHS-II card automatically satisfies a required class, or that a higher V rating is necessary for every mode.
Rank #3
- Speeds up to 280MB/s read, up to 160MB/s write
- Shoot stunning videos in 1080p Full-HD, and 4K
- Save time with a dramatically accelerated workflow
- Backwards-compatible at the highest UHS-I speeds
- Rigorously tested to ensure performance, quality, compatibility, and reliability
When UHS-II may not be worth the added cost
- Your camera supports only UHS-I: the camera will not gain the UHS-II interface rate from a UHS-II card.
- Your current workflow has no speed bottleneck: if bursts, buffer clearing and file transfers are already adequate, higher interface capability may not change your experience.
- You would need a reader but rarely offload large files: include the reader and connection in the total workflow cost, not just the card price.
- You are choosing for video: prioritize the class required by the recording mode rather than buying a higher class without a need.
How to decide before buying
- Find your camera’s SD interface support. Check its manual or official specifications for UHS-II support; do not infer it from the card slot’s appearance.
- Check the required card class for your recording mode. Use the camera manual’s capacity and speed-class guidance for the exact resolution, frame rate and recording format you plan to use.
- Identify the actual bottleneck. Decide whether you need improved sustained burst handling, faster buffer clearing or quicker computer-side transfers. Standards maximums are not product benchmarks.
- Count the whole workflow cost. If computer transfers are the reason for upgrading, confirm that the reader and computer connection support the interface too.
- Compare card specifications with the camera requirements. Choose the interface and minimum class your use requires; a UHS-II V60 or V90 card is not automatically the best value for every camera or photographer.
What the standards figures do—and do not—tell you
The 104 MB/s UHS-I ceiling and the 156 MB/s full-duplex and 312 MB/s half-duplex UHS-II ceilings are SD Association bus-interface specifications, not promised card speeds. Likewise, V60 and V90 denote minimum sequential performance of 60 MB/s and 90 MB/s under the applicable class definitions, not maximum throughput. These figures help distinguish interface capability from sustained-write class; they cannot establish how a particular camera-card combination performs.
Quick Recap
Best Value
- CAPTURE LARGER THAN LIFE. Unlock 4K UHD(3) brilliance and pristine high res stills with video speed class ratings of U3 and V30(4).
- SPEED BARRIERS SHATTERED. Save precious moments with blazing read speeds up to 250MB/s(2) and write speeds up to 170MB/s(2) [256GB-1TB capacities(1)].
- MAXIMIZE WITH MASSIVE CAPACITY. Capture for longer and store more with up to 2TB(1) of storage that can hold up to 2,808 minutes of 4K UHD video recorded at 30 fps (641MB/minute)(9).
- DEFY THE ELEMENTS. Unrelentingly resilient, Sandisk SD memory cards are engineered to perform in extreme conditions, despite rough handling and constant use.(6)
- CONTENT MANAGEMENT, SIMPLIFIED. Back up, organize, and transfer everything easily with the Sandisk Memory Zone desktop app,(7) whether you use an SD card slot or a card reader.
Rank #4
- Extreme performance for professional photographers and videographers with read speeds up to 280MB/s & write speeds up to 180MB/s for seamless content capture
- Class 10, U3 Rated with V60 Video Speed to enhance performance and capture ultra high resolution imagery and extended lengths of 4K Ultra HD and Full HD video
- V60 Video Speed Class to capture stunning 4K content, professional quality burst mode HD photography, and 4K Ultra HD Video at 4096x3072
- Built with the power of UHS-II technology to rapidly increase transfer speed and accelerate your workflows during post production editing
- Compatible with UHS-II enabled DSLR cameras, mirrorless cameras, professional video cameras, and backwards compatible with UHS-I devices at UHS-I speeds
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