
Lexar Professional 1667x 128GB
Score: 73/100
ProGrade Digital Iridium 256GB
Score: 47/100Rankings

The Lexar 128 GB Professional 1667x UHS-II SDXC card (2-pack) provides high read speeds and a V60 video rating, making it suitable for 4K video and fast RAW bursts. Its dual-card configuration, write-protect switch, and lifetime warranty add value, though write speeds lag behind top-tier competitors.

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 | |
250 MB/s | 300 MB/sbest | |
120 MB/s | 275 MB/sbest | |
— | 3 yearsbest | |
| ↓ lower better | 2 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(3) | ||
Video Speed Class | V60 | V90 |
Maximum Read Speed (MB/s) | 250 MB/s | 300 MB/s |
Maximum Write Speed (MB/s) | 120 MB/s | 275 MB/s |
Compatibility(1) | ||
Compatible Devices | UHS-I and non-UHS devices | Canon, Sony, Nikon, Olympus, Panasonic, Fuji, Samsung |
Physical(1) | ||
Weight (g) | 2.0 g | 15.9 g |

Products in the top-left offer the best value (high score, low price).

Professional reviewers praise the Lexar 1667x series for its solid UHS-II performance, V60 rating, and extensive testing across more than 1,100 devices, highlighting its reliability in demanding DSLR and cinema camera workflows. They also note the added confidence of a limited lifetime warranty, though they acknowledge that write speeds, while good, lag behind some premium competitors.
Everyday users consistently rate the cards highly (4.5-4.9/5), lauding the fast transfer speeds, dependable 4K video capture, and the convenience of the write-protect switch and recovery software. Common complaints focus on occasional slower real-world write speeds, incompatibility with older readers, and the absence of a bundled card reader or case.

“dramatically accelerates workflow from start to finish”

“no dropped frames or errors”

“flawless 4K video recording”



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™.