Kingston Canvas React Plus 256GB
Score: 99/100
ProGrade Digital Iridium 256GB
Score: 47/100Rankings
The Kingston Canvas React Plus 256 GB SDXC UHS-II card offers professional-grade 280 MB/s read and 150 MB/s write speeds with a V60 rating, making it ideal for 4K video and high-resolution burst photography. Its rugged, waterproof design and lifetime warranty add reliability for demanding field work.
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 | | |
|---|---|---|
256 GBbest | 256 GBbest | |
280 MB/s | 300 MB/sbest | |
150 MB/s | 275 MB/sbest | |
— | 3 yearsbest | |
| ↓ lower better | 1.7 gbest | 15.9 g |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(3) | ||
Video Speed Class | V60 | V90 |
Maximum Read Speed (MB/s) | 280 MB/s | 300 MB/s |
Maximum Write Speed (MB/s) | 150 MB/s | 275 MB/s |
Physical(1) | ||
Weight (g) | 1.70 g | 15.9 g |
Products in the top-left offer the best value (high score, low price).
TechRadar praises the card's impressive balance of speed and value, noting the 280/150 MB/s rates are more than sufficient for 4K workflows, while B&H highlights its reliability in extreme conditions as a solid choice for travel and documentary shooters.
Everyday users commend the blazing fast performance, durability in harsh environments, and excellent value, though some note the lack of a bundled reader and wish for higher write speeds.
“blazing fast”
“keeps up with the 40MP sensor”
“performs like a $250 card at half the 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™.
