SanDisk Extreme SDHC/SDXC UHS-I Card – 256GB

The SanDisk Extreme SDHC/SDXC UHS-I 256GB card is a high-capacity full-size SD card built for cameras and camcorders that need enough storage for long recording sessions without frequent card swaps. Using SanDisk’s QuickFlow Technology, it reaches sequential read speeds up to 180MB/s and write speeds up to 130MB/s, both faster than the standard 104MB/s ceiling of the base UHS-I specification, though a compatible host device or SanDisk reader is needed to hit those top speeds. The card carries a U3/V30 speed class rating, which supports smooth 4K UHD video capture without dropped frames. At 1.26 x 0.94 x 0.09 inches and 2.1 grams, it’s built to survive rough handling, and SanDisk rates it for operation across -25°C to 85°C. A lifetime limited warranty backs the card, which suits photographers and videographers who need large, dependable storage for extended shoots.

Key Features

• Sequential read speeds up to 180MB/s via SanDisk QuickFlow Technology, speeding up file offloads
• Sequential write speeds up to 130MB/s, supporting smooth 4K UHD video capture
• U3/V30 speed class rating, meeting the standard needed for uninterrupted 4K recording
• 256GB storage capacity, reducing how often cards need swapping during long shoots
• Wide operating temperature range from -25°C to 85°C, suited to varied shooting conditions

Technical Specifications

Best Suited For

• Videographers shooting extended 4K sessions, where 256GB of capacity and V30-rated write speeds reduce interruptions from card swaps
• Photographers using high-resolution cameras, since the 180MB/s read speed shortens time spent transferring large RAW files during editing
• Buyers who want a large-capacity card in a standard full-size SD format, rather than a microSD card requiring an adapter for most camera bodies

Recommended Action: Pair this card with a SanDisk UHS-I reader or a UHS-I-compatible camera slot to reach its full 180MB/s read and 130MB/s write speeds.