Buffalo External SSD USB-A 1TB
Score: 79/100
Netac ZX20 512GB
Score: 50/100Rankings
Buffalo's 1 TB SSD-PUT is a thumb-drive-sized external SSD that delivers solid 600 MB/s read performance in a rugged, MIL-STD-810G package, though it needs a firmware update and uses an adapter for USB-C connectivity.
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 | | |
|---|---|---|
1,000 GBbest | 512 GB | |
600 MB/s | 2,000 MB/sbest | |
500 MB/s | 1,700 MB/sbest | |
| ↓ lower better | 68 gbest | 82 g |
36 monthsbest | 36 monthsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Capacity(1) | ||
Storage Capacity (GB) | 1000 GB | 512 GB |
Performance(2) | ||
Sequential Read Speed (MB/s) | 600 MB/s | 2000 MB/s |
Sequential Write Speed (MB/s) | 500 MB/s | 1700 MB/s |
Build & Design(2) | ||
Weight (g) | 68 g | 82.0 g |
Form Factor | Thumb-drive | Portable |
Power & Connectivity(1) | ||
Included Cable Type | USB‑A to USB‑C adapter | USB‑C to USB‑C, USB‑C to USB‑A |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS, ChromeOS, PS4, PS5, Xbox One, Xbox Series X/S | Windows, macOS, Linux, Android, consoles, smartphones |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praise the SSD-PUT for its miniaturization, solid-state performance in a thumb-drive form factor, and rugged build, but note its modest PCMark score and the need for a firmware update, positioning it as a portable alternative rather than a high-end external SSD.
Everyday users love the tiny size, speed for file transfers, and durability, especially for gaming consoles and travel, while recurring frustrations focus on the required firmware update and the easily misplaced USB-C adapter.
“So small and fast!”
“Works perfectly with PS5”
“Durable and reliable”
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.
