Delkin Devices 256GB SDXC Black UHS-II V90 U3 300MB/s Read 250MB/s Write Box

The Delkin Devices 256GB SDXC Black UHS-II V90 U3 memory card is a high-performance storage solution built for professional creators who need fast, dependable media for advanced imaging workflows. With a large 256GB capacity and UHS-II architecture, this card is engineered to keep up with modern mirrorless cameras, DSLRs, camcorders, and cinema-oriented devices that demand sustained write performance for high-resolution capture.

Compatible With

• SDXC-compatible cameras, camcorders, audio/video recorders, and card readers with SD card slots
• Devices that support UHS-II SDXC media
• Backward compatible with many UHS-I and standard SDXC devices, operating at the host device's supported speed

Built for Professional Recording

Rated V90 and U3, this Delkin Black series card is intended for serious production environments where stable sustained throughput matters as much as peak speed. The V90 video speed class indicates a minimum sustained write speed of 90MB/s, helping support data-heavy codecs, high frame rates, and demanding internal recording modes. This makes it especially well suited for 8K, DCI 4K, UHD 4K, Full HD slow motion, and All-Intra or high-bitrate recording formats used in professional capture.

Fast Read and Write Performance

With maximum read speeds up to 300MB/s and maximum write speeds up to 250MB/s, the card is designed to accelerate both capture and post-production. Fast write performance helps reduce the risk of buffer slowdowns during long bursts of RAW stills or extended video clips, while the high read speed makes file offloading faster when paired with a compatible UHS-II reader. For working photographers and filmmakers, that can mean less waiting on transfers and more time focused on shooting, editing, and delivery.

Ideal for High-Resolution Photo Work

For still photographers, the combination of UHS-II bandwidth and 256GB capacity is well suited to modern high-megapixel cameras. It can handle continuous burst shooting, RAW capture, RAW+JPEG workflows, and fast buffer clearing more effectively than lower-tier cards. Whether covering sports, wildlife, events, portrait sessions, editorial assignments, or commercial production, the card is built to help maintain consistent responsiveness during critical moments.

256GB Capacity for Extended Sessions

The generous 256GB capacity provides room for large image sequences, long video clips, and mixed photo/video assignments. This size is often a practical sweet spot for professionals who want substantial recording time without moving to oversized media that may complicate file management. It is useful for weddings, interviews, live events, travel productions, documentary work, and all-day shoots where dependable capacity matters.

Durable Black Series Construction

Delkin's Black series is known for professional-grade build quality aimed at real-world field use. This card is designed to withstand the rigors of active production, including repeated insertions, travel, and on-location handling. Durable memory cards are especially important for creators working outdoors, on sets, in event venues, or in fast-paced editorial environments where media reliability is essential to protecting valuable footage and images.

Workflow Advantages of UHS-II

UHS-II cards feature an additional row of contacts that enables higher transfer performance when used with compatible cameras and readers. In practice, that means improved capture reliability in supported devices and significantly faster ingest when moving files to a computer. Creators working with large RAW image libraries or high-bitrate video files will appreciate the time saved during backups and editing prep. To achieve the highest transfer rates, pairing this card with a UHS-II SD card reader is recommended.

How It Compares to Lower-Speed SD Cards

Compared with standard UHS-I or lower video-class cards, a V90 UHS-II model like this one is better suited for advanced hybrid and cinema-style cameras. Entry-level cards may work fine for casual stills or basic video, but they can struggle with intensive recording modes, long bursts, or higher bitrate formats. This Delkin model offers the added headroom professionals look for when reliability and speed are non-negotiable.

Best Use Cases

This card is an excellent choice for professional and enthusiast users capturing 4K or 8K video, high-speed bursts of RAW photos, drone footage in supported SDXC devices, interviews, event coverage, timelapse projects, and commercial production. It is particularly valuable in workflows where dropped frames, recording interruptions, or slow offload times can disrupt deadlines.

Recommended Accessories

To get the most from this memory card, consider pairing it with a UHS-II SD card reader for full-speed file transfers, a rugged memory card case for safe transport, a second backup card for dual-card shooting or redundancy, and an organized backup workflow using fast SSD storage. For field shooters, a label system or card wallet can also help streamline rotation and media management during fast-paced productions.

Usage Tips

For optimal reliability, format the card in-camera before important shoots, use it in devices that officially support SDXC and UHS-II media, and avoid removing the card while data is being written. Offload and back up files promptly after each session, and use a high-quality card reader to maximize transfer speed. If you use the card across multiple cameras, reformatting in the destination camera before each critical assignment can help reduce file system issues.

About Delkin Devices

Delkin Devices has long been recognized for producing storage media and workflow accessories tailored to the needs of photographers, videographers, and content creators. Its professional memory card lines are designed to meet the demands of high-end imaging systems, with an emphasis on speed, durability, and dependable performance in production settings.

Why Choose This Card

If you need a premium SDXC card with fast write speeds, strong sustained video performance, and a practical 256GB capacity, the Delkin Devices 256GB SDXC Black UHS-II V90 U3 is a compelling option. It is designed for creators who need media they can trust for high-resolution stills, demanding video formats, and efficient file transfer workflows.