SanDisk Extreme PRO UHS-II 128GB
Score: 89/100
ProGrade Digital Iridium 128GB
Score: 40/100Rankings
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 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 | | |
|---|---|---|
128 GBbest | 128 GBbest | |
280 MB/s | 300 MB/sbest | |
100 MB/s | 200 MB/sbest | |
— | 3 yearsbest | |
| ↓ lower better | 1.67 gbest | 18 g |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
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 | 200 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 | 18 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.
“V90 rating gives me peace of mind for 6K shoots.”
“The card works flawlessly on my Sony A7S III, but older cameras fall back to slower speeds.”
“Premium price is justified by the durability and performance.”
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.
