Kingston DataTraveler 100 G3 128GB
Score: 40/100
SanDisk Ultra Dual Drive 256GB
Score: 82/100Rankings
The SanDisk 256 GB Ultra Dual Drive offers a convenient dual-connector design that bridges USB-C smartphones and legacy USB-A computers. While read performance is decent and the swivel keyring design is portable, write speeds and lack of encryption limit its suitability for demanding tasks.
The Kingston DataTraveler 100 G3 128 GB offers solid read performance and a convenient sliding cap, but its write speeds and random performance are extremely low, making it best for occasional read-heavy tasks.
| Attribute | | |
|---|---|---|
128 GB | 256 GBbest | |
114 MB/s | 150 MB/sbest | |
3.14 MB/s | 75 MB/sbest | |
60 monthsbest | 60 monthsbest | |
| ↓ lower better | 20 g | 9.1 gbest |
| ↓ lower better | 59.9 mm | 38.1 mmbest |
| ↓ lower better | 21.3 mm | 20.7 mmbest |
| ↓ lower better | 10 mm | 9.4 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage(1) | ||
Capacity (GB) | 128 GB | 256 GB |
Performance(2) | ||
Read Speed (MB/s) | 114 MB/s | 150 MB/s |
Write Speed (MB/s) | 3.14 MB/s | 75 MB/s |
Physical(4) | ||
Weight (g) | 20 g | 9.1 g |
Length (mm) | 59.9 mm | 38.1 mm |
Width (mm) | 21.3 mm | 20.7 mm |
Height (mm) | 10 mm | 9.4 mm |
Connectivity(1) | ||
USB Interface | USB 3.2 Gen 1 | USB 3.1 Gen 1 |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS, Linux | Windows; macOS; Android |
Products in the top-left offer the best value (high score, low price).
Professional reviewers acknowledge the drive's solid sequential read capability but criticize its abysmal write and 4K random performance, giving it an AS SSD benchmark score of 0.
Users appreciate the large capacity and easy sliding cap, but many complain about painfully slow write speeds and inconsistent copying.
“Sleek case and worked very nicely for what I needed it for”
“Does exactly what you expect it to do”
“Great product!!!”
Professional reviewers commend the Ultra Dual Drive for solving the USB-C adapter problem with a sleek dual-connector design and respectable read speeds, but note the lack of rugged features and slower write performance compared to higher-end SanDisk Extreme PRO models.
Everyday users appreciate the convenience of a keychain-ready drive that easily moves photos and documents between Android phones and laptops, but many complain about sluggish write speeds, a fragile swivel hinge, and the need to reformat for macOS or Linux.
