Best 1TB QLC DRAM SSDs
There are 11 1TB QLC DRAM SSDs compared here. The fastest is the Corsair Gen4 PCIe MP600 Core at 4700 MB/s read at 1TB, and the highest-rated for endurance is the Samsung QVO 870 (2880 TBW). Sequential reads across the group span 550–4700 MB/s at 1TB.
Why this configuration
A 1TB QLC DRAM SSD is a capacity-per-dollar configuration. QLC packs more gigabytes per dollar in exchange for lower rated endurance.
1TB is the capacity most single-drive builds settle on.
Usually chosen for: bulk storage and read-heavy media libraries.
Good fit: read-heavy storage — media libraries and game installs you rarely rewrite; workstation and creative loads that hammer random I/O.
Look elsewhere for: heavy sustained writes or a video-editing scratch disk.
Ranked list
Speeds on this page are the manufacturer's 1TB ratings where published (11 of 11 drives), not the family headline figure. 2 of the 11 are rated slower at 1TB than at their fastest capacity. Rated writes at 1TB run 520–2500 MB/s.
| # | Model | Tier | Controller | Read MB/s (at 1TB) | TBW | |
|---|---|---|---|---|---|---|
| 1 |  Corsair Gen4 PCIe MP600 Core 1TB, 2TB, 4TB | Top-tier | Phison PS5016-E16 (TSMC 28nm, 2-Co | 4700 | 900 | Find on Amazon |
| 2 |  Intel OPTANE MEMORY H10 250GB, 500GB, 1TB | High-end | Silicon Motion SM2263 + Intel SLL3 | 2400 | 300 | Find on Amazon |
| 3 |  Samsung QVO 870 1TB, 2TB, 4TB, 8TB | Mid-range | Samsung MKX Controller (3-Core, 8- | 560 | 2880 | Check price on Amazon |
| 4 |  Samsung QVO 860 1TB, 2TB, 4TB | Mid-range | SAMSUNG MJX CONTROLLER (3-Core, 8- | 550 | 1440 | Check price on Amazon |
| 5 |  Intel ® SSD 670P SERIES 500GB, 1TB, 2TB | Mid-range | Silicon Motion SM2265 (Dual Core 3 | 3500 | 740 | Find on Amazon |
| 6 |  Corsair MP400 NVMe 1TB, 2TB, 4TB, 8TB | Mid-range | Phison PS5012-E12S (TSMC 12nm, 8-C | 3480 | 1600 | Find on Amazon |
| 7 |  Sabrent ROCKET Q 1TB, 2TB, 4TB, 8TB | Mid-range | Phison PS5012-E12S (TSMC 12nm, 8-C | 3200 | 940 | Find on Amazon |
| 8 |  Intel ® SSD 665P SERIES 1TB, 2TB | Value | Silicon Motion SM2263EN (2-Core, 4 | 2000 | 600 | Find on Amazon |
| 9 |  Intel ® SSD 660P SERIES 500GB, 1TB, 2TB | Value | Silicon Motion SM2263EN (2-Core, 4 | 1800 | 400 | Find on Amazon |
| 10 |  Intel OPTANE MEMORY H20 500GB, 1TB | — | Silicon Motion SM2265 (Dual Core 3 | 3300 | 370 | Find on Amazon |
| 11 |  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.
QLC NAND stores more per cell for a lower price per terabyte, but sustained writes and rated endurance are lower, so it suits read-heavy storage.
An onboard DRAM cache keeps the flash mapping table on the drive, holding random performance steady under sustained load.
Common questions
Is QLC reliable at 1TB?
QLC is fine for typical and read-heavy use; just expect a lower rated endurance (TBW) than a comparable TLC drive, and slower writes once the SLC cache fills.