Best 1TB USB DRAM SSDs
There are 5 1TB USB DRAM SSDs compared here. The fastest is the Crucial Externo CRUCIAL X8 at 1050 MB/s read at 1TB. Sequential reads across the group span 450–1050 MB/s at 1TB.
Why this configuration
A 1TB USB DRAM SSD is a portable, take-anywhere configuration. External SSDs trade a little peak speed for the freedom to move data between a PC, console and laptop without opening anything up.
1TB is the capacity most single-drive builds settle on.
Usually chosen for: backups, working off an external drive, and console storage overflow.
Good fit: workstation and creative loads that hammer random I/O.
Ranked list
Speeds on this page are the manufacturer's 1TB ratings where published (5 of 5 drives), not the family headline figure. Rated writes at 1TB run 450–1000 MB/s.
| # | Model | Tier | Controller | Read MB/s (at 1TB) | TBW | |
|---|---|---|---|---|---|---|
| 1 |  HP Portable HP SSD P700 250GB, 500GB, 1TB | Mid-range | Silicon Motion SM2263EN + SATA-to- | 1000 | — | Find on Amazon |
| 2 |  Samsung T5 PORTABLE SSD 250GB, 500GB, 1TB, 2TB | Mid-range | SAMSUNG 2-core MGX controller(S4LN | 540 | — | Find on Amazon |
| 3 |  Samsung T1 PORTABLE SSD 250GB, 500GB, 1TB | Mid-range | SAMSUNG 2-core MGX controller(S4L0 | 450 | — | Find on Amazon |
| 4 |  Samsung T3 PORTABLE SSD 250GB, 500GB, 1TB, 2TB | Mid-range | SAMSUNG 2-core MGX controller(S4LN | 450 | — | Find on Amazon |
| 5 |  Crucial Externo CRUCIAL X8 1TB, 2TB | — | "Silicon Motion SM2263ENG (2-Core, | 1050 | — | Find on Amazon |
The parts, explained
1TB is the mainstream single-drive capacity.
USB and Thunderbolt portable drives trade peak speed for pocketability and cross-device use.
An onboard DRAM cache keeps the flash mapping table on the drive, holding random performance steady under sustained load.