
Lexar Professional 1667x 128GB
Score: 73/100
ProGrade Digital Iridium 128GB
Score: 40/100Rankings

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 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 | |
250 MB/s | 300 MB/sbest | |
120 MB/s | 200 MB/sbest | |
— | 3 yearsbest | |
| ↓ lower better | 2 gbest | 18 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) | 250 MB/s | 300 MB/s |
Maximum Write Speed (MB/s) | 120 MB/s | 200 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 | 18 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”

“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.”



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.