SanDisk Extreme PRO UHS-II 128GB
Score: 89/100
ProGrade Digital Iridium 256GB
Score: 47/100Rankings
The SanDisk 128 GB Extreme PRO UHS-II SDXC card delivers industry-leading read speeds (up to 280 MB/s) and a solid 60 MB/s sustained write rate (V60), packaged in a rugged, waterproof design and bundled with RescuePRO data-recovery software. It targets prosumers and professionals needing fast off-load and reliable 6K/4K video capture, though its write speed may limit the most demanding codecs.
The ProGrade Digital Iridium 256 GB UHS-II V90 SDXC card delivers ultra-fast read/write performance and rugged durability, making it ideal for high-bitrate 4K/6K video and RAW burst photography.
| Attribute | | |
|---|---|---|
128 GB | 256 GBbest | |
280 MB/s | 300 MB/sbest | |
100 MB/s | 275 MB/sbest | |
— | 3 yearsbest | |
| ↓ lower better | 1.67 gbest | 15.9 g |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage & Capacity(1) | ||
Capacity (GB) | 128 GB | 256 GB |
Performance(4) | ||
Video Speed Class | V60 | V90 |
Maximum Read Speed (MB/s) | 280 MB/s | 300 MB/s |
Maximum Write Speed (MB/s) | 100 MB/s | 275 MB/s |
Speed Class | C10 | Class 10 |
Compatibility(1) | ||
Compatible Devices | UHS‑I, SDHC/SDXC devices (reduced speeds) | Canon, Sony, Nikon, Olympus, Panasonic, Fuji, Samsung |
Physical(1) | ||
Weight (g) | 1.67 g | 15.9 g |
Products in the top-left offer the best value (high score, low price).
Professional reviewers from B&H and Hunt's Photo commend the Extreme PRO UHS-II for its reliable V60 performance, fast 280 MB/s read speed and rugged construction, making it a solid choice for most 6K and 4K workflows.
Everyday users overwhelmingly praise the card's speed, durability and the included RescuePRO software, often rating it five stars.
“no dropped frames or errors”
“flawless 4K video recording”
“Refresh Pro keeps my card health in check during long shoots.”
Professional reviewers from B&H, Leica Camera USA and Filmtools commend the Iridium 256 GB card for its rock-solid reliability, V90 certification and error-correction, highlighting its suitability for high-end DSLR, mirrorless and cinema cameras.
Everyday users consistently rate the card five stars, praising flawless 4K recording, lack of dropped frames and the usefulness of Refresh Pro™.
