
PNY Turbo Attache 3 256GB Gray
Score: 71/100
Vansuny USB Flash Drive 512GB
Score: 79/100Rankings

The Vansuny 512 GB Type-C flash drive delivers near-1 GB/s sequential performance and a rugged zinc-alloy body with dual USB-A/C connectors. Its random-access speeds and occasional USB-C throttling are drawbacks. Ideal for creators moving large media files on the go.

The PNY Turbo Attache 256 GB USB 3.0 flash drive offers a sizable 256 GB capacity with fast 185 MB/s read speeds and a convenient capless sliding design. Its write speed is modest and it lacks advanced features such as encryption or waterproofing. Ideal for office and home users needing portable high-capacity storage.
| Attribute | ![]() | ![]() |
|---|---|---|
256 GB | 512 GBbest | |
185 MB/s | 1,013.42 MB/sbest | |
135 MB/s | 963.46 MB/sbest | |
| ↓ lower better | 18.1 gbest | — |
1 yearsbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage(1) | ||
Storage Capacity (GB) | 256 GB | 512 GB |
Performance(2) | ||
Read Speed (MB/s) | 185 MB/s | 1013.42 MB/s |
Write Speed (MB/s) | 135 MB/s | 963.46 MB/s |
Connectivity(2) | ||
USB Version | USB 3.0 | USB 3.2 Gen 2 |
Interface | Type A | USB Type-A + USB Type-C (OTG) |
General(1) | ||
OS Compatibility | Windows, macOS | Windows 7/8/10/XP/2000/ME/NT, Linux, Mac OS |
Build & Design(1) | ||
Dimensions (L×W×H) (mm) | 57.4 x 10.96 x 20.33 mm | 79.7×21.2×8.5 mm mm |

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

Professional reviewers commend the Vansuny 512GB OTG drive for its near-advertised sequential performance, high AS SSD benchmark score, and robust zinc-alloy construction, but they point out inconsistent USB-C speeds and modest random 4K read rates, and note the lack of coverage from major tech publications.
Everyday users appreciate the fast large-file transfers, especially the ability to move a 4 GB movie to a phone in seconds, and value the plug-and-play experience across multiple platforms, though they report occasional port-speed differences and wish for more information on durability and heat.
