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SecureDigital (SD) memory cards are essential for storing photos, videos, and other data for a wide range of devices. Choosing the right SD card ensures reliable performance, sufficient storage capacity, and compatibility with your equipment, preventing data loss and frustrating slowdowns.
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)
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)
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)
Save time with card offload speeds of up to 200MB/s powered by SanDisk QuickFlow Technology (Up to 200MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such...
Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately)
Shot speeds up to 90MB/s (Write speed up to 90MB/s. Based on internal testing; performance may be lower depending upon host device. 1MB=1,000,000 bytes. X = 150KB/sec.)
Perfect for shooting 4K UHD video and sequential burst mode photography (Full HD (1920x1080) and 4K UHD (3840 x 2160) video support may vary based upon host device, file attributes and other factors. See HD page on SanDisk site.)
INCREDIBLE STORAGE - Offering a spacious 512GB capacity, this SDXC memory card provides ample room for high-resolution photos, videos, and large files, ensuring you never run out of space when it matters most.
BLAZING FAST READ SPEED - Experience rapid data transfers with a maximum read speed of 300 MB/s, significantly reducing the time it takes to move large files from your card to your computer or other storage devices.
LIGHTNING-FAST WRITE SPEED - Maximize your camera's performance with a maximum write speed of 260 MB/s and a minimum of 90 MB/s, perfect for continuous burst mode shooting and capturing seamless 8K video.
ULTRA HIGH SPEED (UHS-II) - Supporting UHS Speed Class U3 and Video Speed Class V90, this card guarantees exceptional performance for the latest high-resolution cameras and camcorders, delivering smooth 8K video recording.
Shot speeds up to 60MB/s, transfer speeds up to 100MB/s (Up to 100MB/s read speed. Write speed up to 60MB/s. Based on internal testing; performance may be lower depending upon host device. 1MB=1,000,000 bytes.)
Perfect for shooting 4K UHD video and sequential burst mode photography (Full HD (1920x1080) and 4K UHD (3840 x 2160) video support may vary based upon host device, file attributes and other factors. See HD page on SanDisk site.)
Capture uninterrupted video with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) (UHS Speed Class 3 designates a performance option designed to support 4K UHD video recording with enabled UHS host devices. UHS Video Speed Class 30 (V30), sustained...
Built for and tested in harsh conditions: temperature-proof, waterproof, shockproof, and X-ray-proof (Card only. See product packaging or see official SanDisk website for more details regarding proof.)
Fast for better pictures and Full HD video. Full HD (1920x1080) video support may vary based upon host device, file attributes, and other factors
Great choice for compact to mid-range point-and-shoot cameras
From 32GB to 256GB(1) to store tons of pictures and even more Full HD video(2). (1)1GB=1,000,000,000 bytes Actual user storage less
Exceptional video recording performance with UHS Speed Class 1 (U1)(5) and Class 10 rating for Full HD video (1080p)(2). (5)UHS Speed Class 1 (U1) designates a performance option to support real time video recording with UHS enabled host devices
Last update on 2026-10-14 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best SecureDigital Memory Cards
Understanding SD Card Types and Capacities
SD cards come in various forms: SD, SDHC (High Capacity), SDXC (Extended Capacity), and SDUC (Ultra Capacity). The primary difference is their storage capacity. Standard SD cards go up to 2GB, SDHC up to 32GB, SDXC up to 2TB, and SDUC up to 128TB. Ensure your device supports the card type and capacity you choose; older devices may not be compatible with newer, higher-capacity cards.
Decoding Speed Ratings
SD card speed is crucial for performance, especially for video recording and burst photography. Look for:
Speed Class: Indicated by a number inside a 'C' (e.g., Class 10 for at least 10MB/s sequential write speed).
UHS Speed Class: For UHS-I, UHS-II, UHS-III, and UHS-Express interfaces, indicated by a number inside a 'U' (e.g., U1 for 10MB/s, U3 for 30MB/s minimum sequential write speed).
Video Speed Class: Designed for video recording, denoted by 'V' followed by a number (e.g., V30 for 30MB/s, V60 for 60MB/s, V90 for 90MB/s minimum sequential write speed).
Application Performance Class: For app performance on Android devices, denoted by 'A' followed by a number (e.g., A1, A2).
Bus Interface: UHS-I, UHS-II, UHS-III, and UHS-Express indicate the maximum theoretical interface speed. UHS-II and higher offer significantly faster read/write speeds, especially beneficial for high-resolution video and professional photography.
Choosing the Right Capacity
Capacity needs vary based on usage. For casual photos and documents, 32GB or 64GB might suffice. For extensive photo libraries, 4K video recording, or large game installations, consider 128GB, 256GB, or even higher. Always check your device's maximum supported capacity.
Durability and Reliability Features
Many cards offer built-in protections against water, temperature extremes, shock, and X-rays. If you plan to use your card in harsh environments or frequently transfer it between devices, look for these durability features. Consider brands known for reliability and check user reviews for long-term performance insights.
Frequently Asked Questions
What is the difference between SDHC and SDXC cards?
SDHC cards have a maximum capacity of 32GB, while SDXC cards can hold up to 2TB. Both use the FAT32 file system for SDHC and exFAT for SDXC. Ensure your device is compatible with the card type you select.
How do I know which speed class I need?
For basic photo taking and standard HD video, a Class 10 or U1 card is usually adequate. For 4K video recording, burst photography, or faster file transfers, a U3, V30, or higher speed class is recommended.
Can I use an SDXC card in a device that only supports SDHC?
Generally, no. SDXC is not backward compatible with SDHC-only slots. However, SDHC cards are usually backward compatible with SDXC slots. Always check your device's specifications.
What does the 'A1' or 'A2' rating mean?
These ratings, known as Application Performance Classes, indicate how well a card performs when running apps directly from it, common on smartphones and tablets. A2 offers better performance than A1.
Is UHS-II significantly better than UHS-I?
Yes, UHS-II offers much faster read and write speeds compared to UHS-I due to an extra row of pins. This is beneficial for professionals shooting high-resolution video or RAW photos and requiring quick transfers.
How important is the brand of the memory card?
Brand reputation often correlates with reliability and performance. Established brands tend to offer better quality control, customer support, and more consistent performance, reducing the risk of data corruption or premature failure.
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