
Verbatim Vx450 128GB
Score: 58/100
Netac ZX20 512GB
Score: 50/100Rankings

The Verbatim Vx450 128 GB SSD delivers solid USB 3.0 performance in a compact, shock-resistant package. It's a budget-friendly option for light-weight storage but lacks capacity and advanced security features.

The Netac ZX20 512 GB Extreme Portable SSD offers flagship-class read/write speeds in a feather-light aluminum case, but its lack of encryption and occasional thermal throttling keep it from being a universal winner.
| Attribute | ![]() | ![]() |
|---|---|---|
128 GB | 512 GBbest | |
450 MB/s | 2,000 MB/sbest | |
295 MB/s | 1,700 MB/sbest | |
| ↓ lower better | 45.4 gbest | 82 g |
24 months | 36 monthsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Capacity(1) | ||
Storage Capacity (GB) | 128 GB | 512 GB |
Performance(3) | ||
Interface | USB 3.0 | USB 3.2 Gen 2 |
Sequential Read Speed (MB/s) | 450 MB/s | 2000 MB/s |
Sequential Write Speed (MB/s) | 295 MB/s | 1700 MB/s |
Build & Design(2) | ||
Weight (g) | 45.4 g | 82.0 g |
Form Factor | 2.5-inch portable | Portable |
Warranty(1) | ||
Warranty Period (months) | 24 months | 36 months |
Power & Connectivity(1) | ||
Included Cable Type | USB 3.0 cable | USB‑C to USB‑C, USB‑C to USB‑A |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS, Linux | Windows, macOS, Linux, Android, consoles, smartphones |


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

Professional reviewers commend the Vx450 as a high-performance portable SSD that brings near-internal SSD speeds to the USB 3.0 world, while noting speed dependence on the host's USB controller.
Everyday users appreciate the fast read performance, plug-and-play ease, and pocket-sized form factor, though they note slower sustained write speeds and limited capacity.

Professional reviewers note that the ZX20's NVMe-based design and USB 3.2 Gen 2 interface place it on par with flagship portable SSDs, highlighting its impressive read/write performance and excellent price-to-performance ratio, while cautioning about potential thermal throttling and unproven long-term endurance.
Everyday users overwhelmingly praise the drive's speed, pocket-size form factor, and the inclusion of both Type-C and Type-A cables, though some report warm temperatures during long transfers and occasional recognition issues with older hardware.
“really not bad for the price”

“smooth performance when running games from the drive”

“Compact size makes it perfect for travel”


