Lexar High-Performance 633x 256GB
Score: 60/100
Samsung EVO Plus 256GB
Score: 80/100Rankings
Samsung EVO Plus 256GB combines fast 160 MB/s reads with 90 MB/s writes and four-proof ruggedness, suitable for 4K UHD recording on mobile devices. Its performance depends on UHS-I hosts and sustained writes may not reach peak speeds. Perfect for users wanting a balance of speed, durability, and capacity.
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 | 256 GBbest | |
100 MB/s | 160 MB/sbest | |
45 MB/s | 90 MB/sbest | |
| ↓ lower better | 453.6 g | 0.25 gbest |
— | 1 yearsbest | |
| ↓ lower better | 1.02 mm | 1 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(4) | ||
Read Speed (MB/s) | 100 MB/s | 160 MB/s |
Write Speed (MB/s) | 45 MB/s | 90 MB/s |
Speed Class | C10 | U3 |
UHS Speed Class | U3 | UHS-I |
Design(2) | ||
Weight (g) | 453.6 g | 0.25 g |
Thickness (mm) | 1.02 mm | 1 mm |
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.
“the first fastest microSD card”
Professional reviewers consider the EVO Plus a solid, reliable microSDXC for mobile and consumer-grade video work, praising its 130 MB/s read capability, U3/V30/A2 ratings and robust build, while noting that its peak speeds fall short of flagship cards like the SanDisk Extreme Pro.
Everyday users consistently highlight the large 256GB capacity, fast 90 MB/s writes for lag-free transfers, and the convenience of the included SD adapter, with few complaints beyond occasional speed drops on older devices.
