Lexar High-Performance 633x 256GB
Score: 60/100
Kingston Canvas Select 32GB
Score: 70/100Rankings
Kingston Canvas Select 32 GB microSDHC offers waterproof, shock-proof durability and up to 80 MB/s read speed for everyday Android and camera use. Its modest 10 MB/s minimum write speed and limited capacity restrict it from demanding 4K video or high-speed burst shooting. Ideal for casual users needing rugged, budget-friendly storage.
Lexar's 256 GB 633x microSDXC offers up to 100 MB/s read speed, a V30 rating, and includes a micro-SD to SD adapter for versatile use. Its slower 45 MB/s write speed and lack of waterproofing limit high-end video applications. Suitable for smartphones, tablets and action cameras where large capacity and broad compatibility are priorities.
| Attribute | | |
|---|---|---|
256 GBbest | 32 GB | |
100 MB/sbest | 80 MB/s | |
45 MB/sbest | 10 MB/s | |
| ↓ lower better | 453.6 g | 4.54 gbest |
| ↓ lower better | 1.02 mm | 1 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage(1) | ||
Capacity (GB) | 256 GB | 32 GB |
Performance(6) | ||
Read Speed (MB/s) | 100 MB/s | 80 MB/s |
Write Speed (MB/s) | 45 MB/s | 10 MB/s |
Speed Class | C10 | Class 10 |
UHS Speed Class | U3 | UHS-I |
Video Speed Class | V30 | V10 |
Interface | UHS-I | microSDHC |
Design(3) | ||
Form Factor | microSDXC | microSDHC |
Weight (g) | 453.6 g | 4.54 g |
Thickness (mm) | 1.02 mm | 1 mm |
General(1) | ||
Compatibility | wide compatibility with any UHS‑I device while remaining backward compatible with Class 10, V10 and U1 standards | Wide device compatibility across Android smartphones, point‑and‑shoot cameras and action cams |
Products in the top-left offer the best value (high score, low price).
Professional testing shows the Lexar 633x card delivers real-world read speeds near 97 MB/s and write speeds around 69 MB/s, surpassing its advertised specifications and confirming its suitability for 4K video capture. Reviewers acknowledge its solid mid-range performance but point out that newer Lexar BLUE models provide higher peak speeds, making the 633x less compelling for users seeking top-tier throughput.
Everyday users praise the large 256 GB capacity, the included SD adapter for easy file transfer, and the peace of mind from the lifetime warranty. They also highlight the card's reliable 4K video performance and compatibility with a wide range of devices. However, some users note the write speed feels modest compared to newer offerings, and the lack of UHS-II support limits its appeal for high-end professional use.
Professional reviewers such as StorageReview describe the card as an ideal low-cost solution for everyday HD video and photo storage, praising its 80-100 MB/s read speeds, 10 MB/s minimum write, A1 app rating and rugged build. However, they note it sits at the lower end of Kingston's Canvas lineup and isn't suited for demanding 4K video or high-speed burst photography.
Everyday users highlight the card's affordability, reliable performance for standard photo and video capture, and the convenience of the included SD adapter, often mentioning its durability during travel and outdoor activities. The most common criticism from consumers is the modest write speed, which feels slow for large file transfers or intensive app installations.
