
Vansuny 128GB USB-C
Score: 90/100
SanDisk Ultra 128GB
Score: 90/100Rankings

The Vansuny 128 GB dual-port flash drive offers versatile USB-A and USB-C connectivity, high read/write speeds on the upgraded model, and a compact, lightweight build. It is well-suited for mobile professionals and travelers who need fast cross-device file transfers.

The SanDisk 128 GB Ultra USB 3.0 flash drive combines high capacity with fast read speeds and built-in encryption, aimed at everyday users needing portable storage. Its retractable connector and 5-year warranty are positives, while slower write performance and a lack of an LED are notable drawbacks.
| Attribute | ![]() | ![]() |
|---|---|---|
128 GBbest | 128 GBbest | |
450 MB/sbest | 130 MB/s | |
400 MB/sbest | 40 MB/s | |
— | 5 yearsbest | |
| ↓ lower better | 9.1 gbest | 30 g |
| ↓ lower better | 56.9 mm | 10.7 mmbest |
| ↓ lower better | 20.1 mmbest | 22.1 mm |
| ↓ lower better | 9.9 mm | 7.9 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(2) | ||
Read Speed (MB/s) | 450 MB/s | 130 MB/s |
Write Speed (MB/s) | 400 MB/s | 40 MB/s |
Connectivity(1) | ||
USB Interface | USB-A 3.0, USB-C 3.0 | USB 3.0 |
Design(1) | ||
Material | Plastic/Metal | Plastic |
Physical(4) | ||
Weight (g) | 9.1 g | 30 g |
Length (mm) | 56.9 mm | 10.7 mm |
Width (mm) | 20.1 mm | 22.1 mm |
Height (mm) | 9.9 mm | 7.9 mm |


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

Professional reviewers praise the drive's value, reliable cross-platform compatibility, and near-SSD speeds on the USB 3.2 version, while noting the solid build and dual-port design.
Everyday users appreciate the portability, dual connectors, and speed, but complain about slower write performance on standard units and occasional swivel looseness.

Professional reviewers commend the drive's advertised 130 MB/s read speed (often exceeding that in real-world tests) and its retractable connector, noting its thermal stability, but criticize the inconsistent write performance, lack of an activity LED, and lingering reliability worries.
Everyday users appreciate the fast reads, ample 128 GB capacity, and the convenience of built-in encryption, describing it as ideal for photos, videos, and daily backups, though they note slower write speeds and occasional file corruption.
“Fast and lots of storage”

“Great for photos and videos”

“SecureAccess is great”

