
Crucial X6 1TB
Score: 34/100
SanDisk Extreme PRO Portable SSD 1TB
Score: 80/100Rankings

The SanDisk 1TB Extreme PRO Portable SSD delivers blazing 2000 MB/s performance in a rugged, IP65-rated aluminum case with hardware encryption, aimed at professionals needing fast, secure field storage.

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 GB | 1,024 GBbest | |
540 MB/s | 2,000 MB/sbest | |
212 MB/s | 2,000 MB/sbest | |
| ↓ lower better | 40 gbest | 77.5 g |
36 months | 60 monthsbest | |
| ↓ lower better | — | 45 °Cbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Capacity(1) | ||
Storage Capacity (GB) | 1000 GB | 1024 GB |
Performance(3) | ||
Interface | USB 3.2 Gen 2 | USB 3.2 Gen 2x2 |
Sequential Read Speed (MB/s) | 540 MB/s | 2000 MB/s |
Sequential Write Speed (MB/s) | 212 MB/s | 2000 MB/s |
Security(1) | ||
Hardware Encryption | false | true |
Build & Design(2) | ||
Weight (g) | 40 g | 77.5 g |
Form Factor | portable | Portable |
Warranty(1) | ||
Warranty Period (months) | 36 months | 60 months |
Power & Connectivity(2) | ||
Power Source | bus-powered | Bus-powered |
Included Cable Type | USB-C to USB-C | USB-C to USB-C, USB-C to USB-A |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS, Android, iOS, consoles | Windows, macOS (limited) |

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.”




Professional reviewers praise the Extreme PRO for its 2000 MB/s speeds, rugged build, and long warranty, but warn about firmware-related reliability problems and limited compatibility with Apple devices.
Users love the rapid transfers and ruggedness, yet many report sudden drive failures after extended use and frustration with firmware support.