Amazon Basics 256GB Micro SDXC
Score: 85/100
Silicon Power 512GB
Score: 100/100Rankings
A 512 GB microSDXC U3/V30/A2 card delivering up to 170 MB/s read and 150 MB/s write, rugged durability and high-endurance options, suited for 4K video, Android apps and demanding outdoor use.
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 GB | 512 GBbest | |
100 MB/s | 170 MB/sbest | |
90 MB/s | 150 MB/sbest | |
— | 5 yearsbest | |
| ↓ lower better | 0.9 g | 0.3 gbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage & Capacity(1) | ||
Capacity (GB) | 256 GB | 512 GB |
Performance(2) | ||
Maximum Read Speed (MB/s) | 100 MB/s | 170 MB/s |
Maximum Write Speed (MB/s) | 90 MB/s | 150 MB/s |
Physical(1) | ||
Weight (g) | 0.9 g | 0.3 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 consider Silicon Power's 512 GB U3 cards reliable mid-tier options that deliver solid 4K video performance and useful A2 app acceleration, highlighting durability, endurance features and a long warranty as key strengths, while noting they don't match the top speeds of SanDisk or Samsung.
Everyday users praise the cards for consistent 4K recording, good durability and the long warranty, especially noting the High Endurance model's reliability in dashcams, but also mention occasional speed variability, confusing model labels and incompatibility with the upcoming Switch 2.
