Best SATA QLC SSDs
There are 5 SATA QLC SSDs compared here. The fastest is the Samsung QVO 870 at 560 MB/s read. Sequential reads across the group span 520–560 MB/s.
Why this configuration
A SATA QLC SSD is a budget and compatibility choice. SATA won't win benchmarks, but it's the cheapest way to add solid-state speed and fits essentially any PC or laptop with a 2.5-inch bay.
Usually chosen for: reviving older machines, cheap capacity upgrades and second drives.
Good fit: read-heavy storage — media libraries and game installs you rarely rewrite; budget upgrades, older PCs and second drives.
Look elsewhere for: heavy sustained writes or a video-editing scratch disk; large-file creative work where NVMe pulls ahead.
Ranked list
| # | Model | Tier | Controller | Read MB/s | TBW | |
|---|---|---|---|---|---|---|
| 1 |  TeamGroup QX 15.36TB | High-end | Phison-E12DC (TSMC) | 560 | 2560 | 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 |  ADATA SU630 250GB, 500GB, 960GB, 1.92TB | Low-end | SILICON MOTION SM2259XT (1-Core, 4 | 520 | 400 | Check price on Amazon |
| 5 |  Acer GTi 715 250GB, 500GB, 1TB | Low-end | PHISON PS3111-S11-13 (1-Core 40nm, | 560 | 300 | Find on Amazon |
The parts, explained
SATA III tops out around 550 MB/s, but it is the cheapest interface and fits any 2.5-inch bay or older laptop.
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.
Common questions
Is QLC reliable at these?
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.
Is SATA fast enough in 2026?
For an OS, apps and most games you won't notice the difference versus NVMe in daily use. NVMe pulls ahead mainly on large file transfers and load-heavy creative work.