SanDisk Ultra 128GB SDXC
Score: 87/100
Samsung EVO Select 256GB
Score: 87/100Rankings
The SanDisk Ultra 128 GB SDXC card offers fast read performance, A1 app capability, and a robust, water- and shock-resistant design, backed by a 10-year warranty. Its U1/V10 rating and modest write speeds keep it in the budget tier, making it unsuitable for 4K or high-bitrate video work.
The Samsung EVO Select 256 GB microSDXC delivers fast read performance, 4K-ready U3/V30 speeds and rugged durability, though write speed consistency varies between model variants.
| Attribute | | |
|---|---|---|
128 GB | 256 GBbest | |
100 MB/s | 130 MB/sbest | |
63 MB/sbest | 30 MB/s | |
10 yearsbest | 10 yearsbest | |
| ↓ lower better | 8 g | 0.25 gbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage & Capacity(2) | ||
Capacity (GB) | 128 GB | 256 GB |
Card Type | SDXC | microSDXC |
Performance(6) | ||
UHS Speed Class | U1 | U3 |
Video Speed Class | V10 | V30 |
Maximum Read Speed (MB/s) | 100 MB/s | 130 MB/s |
Maximum Write Speed (MB/s) | 63 MB/s | 30 MB/s |
Speed Class | C10 | Class 10 |
Application Performance Class | A1 | A2 |
Compatibility(1) | ||
Compatible Devices | Broad device compatibility via SD adapter | Android smartphones, tablets, Nintendo Switch, action cameras, drones, handheld gaming devices |
Physical(1) | ||
Weight (g) | 8 g | 0.25 g |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praise the Ultra 128 GB for its reliable read performance, solid random I/O that exceeds the A1 specification, and overall value, but caution that its U1/V10 write class makes it unsuitable for 4K or high-bitrate video work.
Everyday users consistently highlight fast photo transfers, smooth app performance on Android devices, and the sturdy SD adapter, while noting slower write speeds, occasional incompatibility with dashcams or drones, and rare corruption when the card is not ejected properly.
“Perfect for my Nintendo Switch-loads games quickly and has plenty of space.”
“Used it for 4K drone footage-no dropped frames.”
“Survived a washing machine cycle-data intact!”
Professional reviewers consistently commend the EVO Select 256 GB for its high read speed, A2 application performance, and rugged build, positioning it as a strong value proposition for 4K video and gaming. However, they caution consumers to check the model number, as older variants lack the same performance and the warranty does not cover continuous write-intensive use.
Everyday users praise the card for its ample storage, fast transfers, and durability that survives harsh conditions, but many express frustration when receiving slower variants or encountering loose adapters.
