Amazon Basics 256GB Micro SDXC
Score: 85/100
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 Amazon Basics 256 GB microSDXC offers solid 100 MB/s read performance, A2 app class, and a full-size adapter in a rugged, waterproof package, making it a budget-friendly choice for 4K video and mobile storage. Its durability features and broad device compatibility add to its appeal, though write speeds are modest and warranty coverage is limited.
| Attribute | | |
|---|---|---|
256 GBbest | 256 GBbest | |
100 MB/s | 150 MB/sbest | |
90 MB/sbest | 30 MB/s | |
— | 10 yearsbest | |
| ↓ lower better | 0.9 gbest | 4.5 g |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(4) | ||
UHS Speed Class | U3 | U1 |
Maximum Read Speed (MB/s) | 100 MB/s | 150 MB/s |
Maximum Write Speed (MB/s) | 90 MB/s | 30 MB/s |
Application Performance Class | A2 | A1 |
Compatibility(1) | ||
Compatible Devices | Smartphones, tablets, DSLRs, action cameras, drones, laptops, game consoles (except Nintendo Switch 2), car audio systems | Android smartphones, tablets, Chromebooks, Windows laptops, Nintendo Switch (not Switch 2), cameras with SD slot |
Physical(1) | ||
Weight (g) | 0.9 g | 4.5 g |
Products in the top-left offer the best value (high score, low price).
Professional reviewers from Manuals+.net, BensBargains and ImproveTheWorld.net praise the card for its high-speed transfer rates, reliable 4K video support and A2 app performance, noting it as a great deal and a top-selling Amazon Choice.
Everyday users consistently commend the card for delivering the advertised capacity, fast and dependable performance in cameras and drones, and exceptional price per gigabyte.
“True 128GB capacity”
“Fast and reliable”
“Great for cameras”
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.
