SanDisk Ultra 128GB SDXC
Score: 87/100
Amazon Basics 128GB microSDXC
Score: 58/100Rankings
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 Amazon Basics 128 GB microSDXC offers high-performance U3, A2 and V30 ratings at a budget-friendly price, with rugged IPX6 waterproofing and a full-size SD adapter. It's well suited for action cameras, drones and Android devices, though the lowest-capacity models can suffer slower writes and it isn't compatible with the Nintendo Switch 2.
| Attribute | | |
|---|---|---|
128 GBbest | 128 GBbest | |
100 MB/sbest | 100 MB/sbest | |
63 MB/sbest | 60 MB/s | |
10 yearsbest | 1 years | |
| ↓ lower better | 8 gbest | 8.02 g |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage & Capacity(1) | ||
Card Type | SDXC | microSDXC |
Performance(5) | ||
UHS Speed Class | U1 | U3 |
Video Speed Class | V10 | V30 |
Maximum Write Speed (MB/s) | 63 MB/s | 60 MB/s |
Speed Class | C10 | Class 10 |
Application Performance Class | A1 | A2 |
Compatibility(1) | ||
Compatible Devices | Broad device compatibility via SD adapter | Smartphones, tablets, DSLRs, action cameras, drones, laptops, gaming consoles (except Nintendo Switch 2), car audio systems |
Warranty(1) | ||
Warranty Period (years) | 10 years | 1 years |
Physical(1) | ||
Weight (g) | 8 g | 8.02 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.
“Works perfectly with my GoPro and drone”
“Fast and reliable”
“Great value”
Professional reviewers consistently highlight the Amazon Basics Micro SDXC line as a high-value option that delivers near-premium speeds, solid durability, and A2 app performance, making it especially attractive for budget-conscious 4K video creators and Android power users.
Everyday users praise the card for its reliable performance, genuine capacity, ease of use, and excellent price-to-capacity ratio, often noting flawless 4K recording with GoPro and drones. Recurring complaints focus on slower write speeds on lower capacities, occasional fit issues with small GPS units, and the lack of a protective case.
