Best 128GB SATA SSDs
There are 128 128GB SATA SSDs compared here. The fastest is the Reletech P400 at 3500 MB/s read. Sequential reads across the group span 285–3500 MB/s at 128GB.
Why this configuration
A 128GB SATA 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.
At 128GB this is really a boot or cache drive rather than a main library.
Usually chosen for: reviving older machines, cheap capacity upgrades and second drives.
Good fit: budget upgrades, older PCs and second drives.
Look elsewhere for: large-file creative work where NVMe pulls ahead.
Ranked list
The top 20 of 128 are listed. The full SSD catalogue filters on every spec.
Speeds on this page are the manufacturer's 128GB ratings where published (39 of 128 drives), not the family headline figure. 18 of the 128 are rated slower at 128GB than at their fastest capacity. Rated writes at 128GB run 150–520 MB/s.
| # | Model | Tier | Controller | Read MB/s (at 128GB) | TBW | |
|---|---|---|---|---|---|---|
| 1 |  Samsung 850 PRO 128GB, 250GB, 500GB, 1TB, 2TB | Top-tier | Samsung 3-core 400MHz MHX Controll | 550 | 450 | Check price on Amazon |
| 2 |  Samsung 840 PRO 128GB, 250GB, 500GB | Top-tier | Samsung's 3-Core MDX Controller | 540 | 73 | Check price on Amazon |
| 3 |  Samsung 850 EVO 128GB, 250GB, 500GB, 1TB, 2TB, 4TB | High-end | Samsung MGX Controller (2-Core, 8- | 540* | 300 | Check price on Amazon |
| 4 |  Samsung 840 EVO 128GB, 250GB, 500GB, 1TB, 750GB | High-end | Samsung's 3-Core 400MHz MEX Contro | 540* | — | Check price on Amazon |
| 5 |  Samsung 750 EVO 128GB, 250GB, 500GB | High-end | Samsung MGX Controller | 540* | 100 | Check price on Amazon |
| 6 |  Samsung 850 EVO M.2 128GB, 250GB, 500GB, 1TB | High-end | Samsung MGX Controller (2-Core, 8- | 540* | 150 | Check price on Amazon |
| 7 |  ADATA SU900 128GB, 250GB, 500GB, 1TB, 2TB | High-end | Silicon Motion SM2258H (1-Core, 4- | 560 | 1600 | Find on Amazon |
| 8 |  Crucial MX100 128GB, 250GB, 500GB | High-end | Marvell 88SS9189 | 550 | 72 | Find on Amazon |
| 9 |  OCZ TRION 150 128GB, 250GB, 500GB, 960GB | High-end | Toshiba TC58NC1000 (Phison PS3110- | 550* | 240 | Find on Amazon |
| 10 |  Samsung 830 SERIES 128GB, 250GB, 500GB, 64GB | High-end | SAMSUNG S4LJ204X01-Y040 | 520 | — | Find on Amazon |
| 11 |  Crucial M500 128GB, 250GB, 500GB, 960GB | High-end | Marvell 88SS9187 | 500* | 72 | Find on Amazon |
| 12 |  Corsair Performance Series™ Pro 128GB, 250GB | High-end | Marvell 88S-9174 BKK2 | 500 | — | Find on Amazon |
| 13 |  ADATA SU800 128GB, 250GB, 500GB, 1TB, 2TB | Mid-range | Silicon Motion SM2258G (1-Core, Cl | 560 | 1600 | Check price on Amazon |
| 14 |  Mushkin TRIACTOR 3DX 128GB, 250GB, 500GB, 1TB | Mid-range | Silicon Motion SM2258XT (1-Core, 4 | 565* | — | Find on Amazon |
| 15 |  ADATA SP920 128GB, 250GB, 500GB, 1TB | Mid-range | Marvell 88SS9189 | 560 | 72 | Find on Amazon |
| 16 |  ADATA ULTIMATE SU800 M.2 128GB, 250GB, 500GB, 1TB | Mid-range | Silicon Motion SM2258 | 560 | 800 | Find on Amazon |
| 17 |  HP S700 PRO 128GB, 250GB, 500GB, 1TB | Mid-range | Silicon Motion SM2258 | 560 | 650 | Find on Amazon |
| 18 |  Crucial BX300 128GB, 250GB, 500GB | Mid-range | Silicon Motion SM2258 | 555* | 160 | Find on Amazon |
| 19 |  Kingston SSDNOW KC100 128GB, 250GB, 500GB | Mid-range | SandForce SF-2281 | 555* | 640 | Find on Amazon |
| 20 |  Crucial M550 128GB, 250GB, 500GB, 1TB | Mid-range | Marvell 88SS9189 | 550 | 72 | Find on Amazon |
* family rating — the manufacturer does not publish a 128GB figure for this drive.
The parts, explained
128GB suits a boot drive or a light secondary disk.
SATA III tops out around 550 MB/s, but it is the cheapest interface and fits any 2.5-inch bay or older laptop.
Common questions
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.