Samsung EVO Select 512GB
Score: 100/100
Gigastone 256GB microSD
Score: 98/100Rankings
Samsung EVO Select 512 GB delivers top-tier read speeds, A2 app performance and full 4-proof ruggedness, making it a premium choice for 4K video, gaming and demanding mobile workloads.
The Gigastone 256 GB microSDXC offers strong 4K video capability, solid durability and a unique 5-year data-recovery warranty, making it a dependable mid-range choice. Real-world write speeds fall short of the advertised maximum, which may limit high-bit-rate use cases.
| Attribute | | |
|---|---|---|
512 GBbest | 256 GB | |
160 MB/sbest | 130 MB/s | |
90 MB/sbest | 85 MB/s | |
10 yearsbest | 5 years | |
| ↓ lower better | 0.25 gbest | 0.57 g |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage & Capacity(1) | ||
Capacity (GB) | 512 GB | 256 GB |
Performance(4) | ||
UHS Speed Class | U3 | UHS-I |
Maximum Read Speed (MB/s) | 160 MB/s | 130 MB/s |
Maximum Write Speed (MB/s) | 90 MB/s | 85 MB/s |
Speed Class | Class 10 | C10 |
Compatibility(1) | ||
Compatible Devices | smartphones, tablets, drones, action cameras, Nintendo Switch | GoPro, DJI, Drone, Security Camera, Nintendo Switch, Smartphones, Tablets, PC, Camera, DSLR, Dash Cam, Camcorder, Surveillance, e-Reader, etc. |
Warranty(1) | ||
Warranty Period (years) | 10 years | 5 years |
Physical(1) | ||
Weight (g) | 0.25 g | 0.57 g |
Products in the top-left offer the best value (high score, low price).
Professional reviewers from Tom's Guide, Digital Trends and The Verge consistently commend the EVO Select for its high read speed, A2 app performance, and excellent price-to-capacity ratio, noting it's not suited for constant-write endurance scenarios.
Everyday users rate the card 4.7-4.8/5, praising fast transfers, reliable 4K recording and rugged build, with occasional complaints about write speed drops and a flimsy adapter.
“Transfers my 3GB video files in under a minute”
“Perfect for my Nintendo Switch - loads games fast”
“Used it on a beach trip - survived saltwater and sand”
Professional reviewers praise the reliable 4K capture and durability, noting the free 5-year data recovery as a unique value add while cautioning that real-world speeds can be lower than advertised.
Everyday users appreciate the robust build and long warranty, but many report write speeds that don't match marketing claims and occasional freezing on lower-end cameras.
