Best 4TB QLC DRAM SSDs
There are 5 4TB QLC DRAM SSDs compared here. The fastest is the Corsair Gen4 PCIe MP600 Core at 4950 MB/s read at 4TB, and the highest-rated for endurance is the Samsung QVO 870 (2880 TBW). Sequential reads across the group span 550–4950 MB/s at 4TB.
Why this configuration
A 4TB QLC DRAM SSD is a capacity-per-dollar configuration. QLC packs more gigabytes per dollar in exchange for lower rated endurance.
4TB starts to replace juggling several smaller drives.
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 4TB ratings where published (5 of 5 drives), not the family headline figure. Rated writes at 4TB run 520–3950 MB/s.
| # | Model | Tier | Controller | Read MB/s (at 4TB) | TBW | |
|---|---|---|---|---|---|---|
| 1 |  Corsair Gen4 PCIe MP600 Core 1TB, 2TB, 4TB | Top-tier | Phison PS5016-E16 (TSMC 28nm, 2-Co | 4950 | 900 | Find on Amazon |
| 2 |  Samsung QVO 870 1TB, 2TB, 4TB, 8TB | Mid-range | Samsung MKX Controller (3-Core, 8- | 560 | 2880 | Check price on Amazon |
| 3 |  Samsung QVO 860 1TB, 2TB, 4TB | Mid-range | SAMSUNG MJX CONTROLLER (3-Core, 8- | 550 | 1440 | Check price on Amazon |
| 4 |  Corsair MP400 NVMe 1TB, 2TB, 4TB, 8TB | Mid-range | Phison PS5012-E12S (TSMC 12nm, 8-C | 3480 | 1600 | Find on Amazon |
| 5 |  Sabrent ROCKET Q 1TB, 2TB, 4TB, 8TB | Mid-range | Phison PS5012-E12S (TSMC 12nm, 8-C | 3400 | 940 | Find on Amazon |
The parts, explained
4TB handles big Steam libraries, video projects and archives.
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 4TB?
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.