SanDisk Ultra 128GB SDXC
Score: 87/100
Patriot Memory LX Series 128GB 2-pack
Score: 77/100Rankings
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 Patriot LX 128 GB 2-pack offers solid read performance and rugged durability at a good price, making it suitable for Full HD video and mobile storage. Write speeds are modest and the warranty is limited, so power users may look elsewhere.
| Attribute | | |
|---|---|---|
128 GBbest | 128 GBbest | |
100 MB/sbest | 81.07 MB/s | |
63 MB/sbest | 20.77 MB/s | |
10 yearsbest | 2 years | |
| ↓ lower better | 8 g | 0.03 gbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage & Capacity(1) | ||
Card Type | SDXC | microSDXC |
Performance(3) | ||
Maximum Read Speed (MB/s) | 100 MB/s | 81.07 MB/s |
Maximum Write Speed (MB/s) | 63 MB/s | 20.77 MB/s |
Speed Class | C10 | Class 10 |
Compatibility(1) | ||
Compatible Devices | Broad device compatibility via SD adapter | microSDXC devices; usable with SD adapter |
Warranty(1) | ||
Warranty Period (years) | 10 years | 2 years |
Physical(1) | ||
Weight (g) | 8 g | 0.03 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.
“Patriot has always been reliable for me.”
“It's only been 2 weeks and the card is already corrupt.”
Patriot offers marginally better performance and ruggedness; SanDisk may have a longer warranty.
Reviewers commend the card's impressive sequential read (81 MB/s) and write (20.8 MB/s) numbers and strong random IOPS, while noting inconsistencies in advertised write speeds and the short warranty.
Most users like the fast reads and rugged design, but a few report early failures and confusion over write-speed claims.
