
Samsung EVO Select 256GB
Score: 58/100
SanDisk Ultra 256GB microSD
Score: 90/100Rankings

The SanDisk 256GB Ultra microSDXC offers high capacity, fast read performance and rugged durability, but its write speed is limited and it lacks 4K video certification.

The Samsung EVO Select 256 GB delivers fast sequential performance and solid durability, making it a versatile choice for mobile devices and 4K recording. Its UHS-I interface caps ultimate speed and the warranty is shorter than some competitors.
| Attribute | ![]() | ![]() |
|---|---|---|
256 GBbest | 256 GBbest | |
130 MB/s | 150 MB/sbest | |
90 MB/sbest | 30 MB/s | |
1 years | 10 yearsbest | |
| ↓ lower better | 13.6 g | 4.5 gbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(5) | ||
UHS Speed Class | U3 | U1 |
Maximum Read Speed (MB/s) | 130 MB/s | 150 MB/s |
Maximum Write Speed (MB/s) | 90 MB/s | 30 MB/s |
Speed Class | C10 | Class 10 |
Application Performance Class | A2 | A1 |
Compatibility(1) | ||
Compatible Devices | Smartphones, tablets, drones, action cameras, 360° cameras, Nintendo Switch, DSLRs (with adapter) | Android smartphones, tablets, Chromebooks, Windows laptops, Nintendo Switch (not Switch 2), cameras with SD slot |
Warranty(1) | ||
Warranty Period (years) | 1 years | 10 years |
Physical(1) | ||
Weight (g) | 13.6 g | 4.5 g |

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

Professional reviewers found the EVO Select 256GB delivers "impressive speed for its class" with reads around 98 MB/s and writes near 90 MB/s, praising its A2 and V30 ratings and value proposition.
Users praise smooth 4K capture, fast app loading and ruggedness, but note occasional file corruption and the presence of counterfeit units on some marketplaces.

“Works perfectly”

“Writes are slow on large transfers.”

“Fast read speeds make file transfers quick”




Professional reviewers highlight the Ultra 256GB as a solid, value-driven choice for Full HD video and Android app storage, praising its fast read speeds and rugged build while noting its limited write performance and lack of 4K support.
Everyday users appreciate the card's reliability, capacity, and durability, often noting it works straight out of the box and improves app responsiveness, but many complain about slower write speeds and the inability to handle 4K video.