SanDisk Extreme SDXC UHS-I Card – 64GB (SDSDXV2-064G-GNCIN)

The SanDisk Extreme SDXC UHS-I 64GB card is a full-size SD memory card built for cameras and camcorders that need dependable speed for 4K video and burst photography without stepping up to a UHS-II card or reader. Using SanDisk QuickFlow Technology, it reaches sequential read speeds up to 170MB/s and write speeds up to 80MB/s, both above the base UHS-I ceiling of 104MB/s, though a compatible host device or SanDisk reader is required to hit those top speeds. It carries a U3/V30 speed class rating, supporting smooth 4K UHD video capture without dropped frames. At 1.26 x 0.94 x 0.09 inches and 2.1 grams, the card is built to withstand rough handling, and SanDisk rates it for operation across -25°C to 85°C. A lifetime limited warranty backs it, making it a solid mid-capacity option for photographers and videographers who don’t need the largest storage tier.

Key Features

• Sequential read speeds up to 170MB/s via SanDisk QuickFlow Technology, speeding up file transfers
• Sequential write speeds up to 80MB/s, supporting reliable 4K UHD video recording
• U3/V30 speed class rating, meeting the standard needed for uninterrupted 4K capture
• 64GB storage capacity, a practical mid-range size for regular shooting without excess cost
• Wide operating temperature range from -25°C to 85°C, suited to varied shooting conditions

Technical Specifications

Best Suited For

• Everyday photographers and hobbyist videographers who want reliable 4K-capable performance without paying for a higher-capacity card they won’t fill
• Buyers replacing an older or slower SD card, since 170MB/s read speeds noticeably shorten file transfer times compared to standard UHS-I cards
• Camera owners needing a dependable backup or second card, given the balance of capacity, speed, and price at the 64GB tier

Recommended Action: Pair this card with a SanDisk UHS-I reader or UHS-I-compatible camera slot to reach its full 170MB/s read and 80MB/s write speeds.