Independent testing
How much independent testing exists for each portable ssd
Of the 12 portable ssds we track, 12 have been physically measured by at least one independent lab and 5 by three or more. Below is every one, ordered by how much independent hands-on evidence stands behind it — densest first.
A coverage record, not a ranking of which is best.
| Product | Independent labs | Metrics measured | Outlets on record |
|---|---|---|---|
| SanDisk Extreme PRO Portable SSD (USB4) | 4 | 5 | 4 |
| Kingston XS2000 Portable SSD | 3 | 3 | 3 |
| Crucial X10 Pro Portable SSD | 3 | 1 | 3 |
| Crucial X6 Portable SSD | 3 | 1 | 3 |
| Samsung T9 Portable SSD | 3 | 1 | 3 |
| WD My Passport SSD (2022) | 2 | 2 | 2 |
| Samsung T7 Shield Portable SSD | 2 | 1 | 3 |
| Crucial X9 Pro Portable SSD | 1 | 1 | 2 |
| LaCie Rugged SSD Pro | 1 | 1 | 1 |
| Samsung T7 Portable SSD | 1 | 1 | 2 |
| SanDisk Extreme Portable SSD V2 | 1 | 1 | 2 |
| SanDisk Extreme PRO Portable SSD V2 | 1 | 1 | 1 |
Each figure is a count of what independent testers actually did — how we count. A low count means little independent evidence has been gathered yet, never that a product is worse. See also the Portable Ssds buying guide and the reviewers we cite.