ProGrade Digital Iridium 256GB
Score: 47/100
ProGrade Digital Iridium 128GB
Score: 40/100Rankings
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.
The ProGrade Digital Iridium 128 GB UHS-II V90 SDXC card offers professional-grade speed and durability for high-resolution video and RAW photography, though its premium price and UHS-II dependency limit some users.
| Attribute | | |
|---|---|---|
256 GBbest | 128 GB | |
300 MB/sbest | 300 MB/sbest | |
275 MB/sbest | 200 MB/s | |
3 yearsbest | 3 yearsbest | |
| ↓ lower better | 15.9 gbest | 18 g |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage & Capacity(1) | ||
Capacity (GB) | 256 GB | 128 GB |
Performance(1) | ||
Maximum Write Speed (MB/s) | 275 MB/s | 200 MB/s |
Physical(1) | ||
Weight (g) | 15.9 g | 18 g |
Products in the top-left offer the best value (high score, low price).
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™.
“no dropped frames or errors”
“flawless 4K video recording”
“Refresh Pro keeps my card health in check during long shoots.”
Professional reviewers praise the Iridium for its V90 certification, rigorous testing and added value of firmware tools, while noting the premium price and the need for UHS-II hosts to unlock full performance.
Everyday users appreciate the rock-solid performance in 4K/5K recording and the confidence provided by the laser-etched serial number, but note limited UHS-II support in older gear.
