SanDisk Extreme PRO 256GB
Score: 100/100
Gigastone 256GB microSD
Score: 98/100Rankings
The SanDisk 256 GB Extreme PRO SDXC UHS-I offers top-tier read/write performance (200 / 140 MB/s) and rugged protection, making it a strong choice for 4K creators. Its UHS-I bus limits it on cameras that can exploit UHS-II bandwidth, and some users report speed variance with cheaper readers.
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 | | |
|---|---|---|
256 GBbest | 256 GBbest | |
200 MB/sbest | 130 MB/s | |
140 MB/sbest | 85 MB/s | |
— | 5 yearsbest | |
| ↓ lower better | 2 g | 0.57 gbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage & Capacity(1) | ||
Card Type | SDXC | microSDXC |
Performance(4) | ||
UHS Speed Class | U3 | UHS-I |
Maximum Read Speed (MB/s) | 200 MB/s | 130 MB/s |
Maximum Write Speed (MB/s) | 140 MB/s | 85 MB/s |
Speed Class | Class 10 | C10 |
Compatibility(1) | ||
Compatible Devices | DSLRs, mirrorless cameras, camcorders, laptops | GoPro, DJI, Drone, Security Camera, Nintendo Switch, Smartphones, Tablets, PC, Camera, DSLR, Dash Cam, Camcorder, Surveillance, e-Reader, etc. |
Physical(1) | ||
Weight (g) | 2.0 g | 0.57 g |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praise the blend of high read/write speeds, V30/U3 ratings and rugged build, recommending it for 4K creators while noting UHS-I is slower than UHS-II cards.
Everyday users highlight reliable performance, fast transfers and durability, but note occasional slower-than-advertised speeds and occasional shipping delays.
“Works perfectly with my Sony A7 III and Panasonic GH5”
“Fast transfer speeds save time”
“Durable and reliable”
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.
