Crucial X6 1TB
Score: 34/100
Buffalo External SSD USB-A 1TB
Score: 79/100Rankings
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 Crucial X6 1TB is an affordable, ultra-light portable SSD with decent everyday performance, but its QLC NAND and DRAM-less architecture prevent it from delivering the high sustained speeds some users expect.
| Attribute | | |
|---|---|---|
1,000 GBbest | 1,000 GBbest | |
540 MB/s | 600 MB/sbest | |
212 MB/s | 500 MB/sbest | |
| ↓ lower better | 40 gbest | 68 g |
36 monthsbest | 36 monthsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(2) | ||
Sequential Read Speed (MB/s) | 540 MB/s | 600 MB/s |
Sequential Write Speed (MB/s) | 212 MB/s | 500 MB/s |
Build & Design(2) | ||
Weight (g) | 40 g | 68 g |
Form Factor | portable | Thumb-drive |
Power & Connectivity(2) | ||
Power Source | bus-powered | Bus-powered |
Included Cable Type | USB-C to USB-C | USB‑A to USB‑C adapter |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS, Android, iOS, consoles | Windows, macOS, ChromeOS, PS4, PS5, Xbox One, Xbox Series X/S |
Technical Specs(1) | ||
Controller | Silicon Motion SM2259XT | Phison PS2251-17 (U17) |
Products in the top-left offer the best value (high score, low price).
Professional reviewers consider the X6 a serviceable, budget-friendly portable SSD that works well for everyday tasks but is hampered by its SATA-based internals and DRAM-less design, recommending PCIe-based alternatives for power users.
Consumers appreciate the X6's reliability, pocket-size convenience, and price, though many note that real-world speeds fall short of the advertised 800 MB/s and that performance drops after the cache is exhausted.
“smaller than car keys”
“perfect for travel”
“Crucial SSDs have never failed me.”
Crucial X6 is a budget option, but Buffalo provides far superior speed and durability for a modest price increase.
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.
