
SanDisk Ultra 128GB
Score: 49/100
SamData 64GB USB Flash Drive
Score: 63/100Rankings

SamData's 64 GB USB flash drives provide budget-friendly, rugged storage with basic USB 2.0 performance, making them suitable for everyday document and photo backups. Their slow speeds and lack of security features keep them from demanding professional use.

The SanDisk 128 GB Ultra USB-A flash drive combines a retractable connector with solid read performance and built-in encryption, but its write speed and plastic feel limit its suitability for demanding tasks.
| Attribute | ![]() | ![]() |
|---|---|---|
128 GBbest | 64 GB | |
130 MB/sbest | 18 MB/s | |
40 MB/sbest | 8 MB/s | |
60 monthsbest | 12 months | |
| ↓ lower better | 30 g | 10.2 gbest |
| ↓ lower better | 10.7 mmbest | 57.9 mm |
| ↓ lower better | 22.1 mm | 19.1 mmbest |
| ↓ lower better | 7.9 mmbest | 9.9 mm |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage(1) | ||
Capacity (GB) | 128 GB | 64 GB |
Performance(2) | ||
Read Speed (MB/s) | 130 MB/s | 18 MB/s |
Write Speed (MB/s) | 40 MB/s | 8 MB/s |
Warranty(1) | ||
Warranty Period (months) | 60 months | 12 months |
Physical(5) | ||
Weight (g) | 30 g | 10.2 g |
Length (mm) | 10.7 mm | 57.9 mm |
Width (mm) | 22.1 mm | 19.1 mm |
Height (mm) | 7.9 mm | 9.9 mm |
Material | Plastic | Metal/ABS plastic |
Connectivity(1) | ||
USB Interface | USB-A 3.0 | USB 2.0 |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS, Android, iOS | Windows, Linux, macOS |
Design(1) | ||
LED Indicator | false | true |

Products in the top-left offer the best value (high score, low price).

Professional reviewers commend the advertised 130 MB/s read speed and retractable connector, but criticize inconsistent write performance, lack of an LED, and lingering reliability worries from related models.
Everyday users appreciate fast reads, ample capacity and encryption, yet frequently mention slow writes, absence of an LED, and occasional file corruption.

“Fast and lots of storage”

“Great for photos and videos”

“SecureAccess is great”



Everyday users praise the drives for reliable basic storage, the helpful color variety, and the rugged metal or waterproof construction. Common complaints focus on the slow write speed, the 4 GB FAT32 file-size limit, inconsistent build quality, and the absence of encryption.