Best 128GB SATA MLC SSDs
There are 56 128GB SATA MLC SSDs compared here. The fastest is the ADATA SU900 at 560 MB/s read at 128GB, and the highest-rated for endurance is the Kingston SSDNOW KC300 (1785 TBW). Sequential reads across the group span 285–560 MB/s at 128GB.
Why this configuration
A 128GB SATA MLC SSD is a legacy high-endurance choice. These older MLC SATA drives are slow by today's standards but exceptionally durable, which is why they still appear in always-on and write-heavy roles.
At 128GB this is really a boot or cache drive rather than a main library.
Usually chosen for: keeping an older system alive, or a rugged secondary/logging drive.
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 56 are listed. The full SSD catalogue filters on every spec.
Speeds on this page are the manufacturer's 128GB ratings where published (19 of 56 drives), not the family headline figure. 4 of the 56 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 840 PRO 128GB, 250GB, 500GB | Top-tier | Samsung's 3-Core MDX Controller | 540 | 73 | Check price on Amazon |
| 2 |  ADATA SU900 128GB, 250GB, 500GB, 1TB, 2TB | High-end | Silicon Motion SM2258H (1-Core, 4- | 560 | 1600 | Find on Amazon |
| 3 |  Crucial MX100 128GB, 250GB, 500GB | High-end | Marvell 88SS9189 | 550 | 72 | Find on Amazon |
| 4 |  Samsung 830 SERIES 128GB, 250GB, 500GB, 64GB | High-end | SAMSUNG S4LJ204X01-Y040 | 520 | — | Find on Amazon |
| 5 |  Crucial M500 128GB, 250GB, 500GB, 960GB | High-end | Marvell 88SS9187 | 500* | 72 | Find on Amazon |
| 6 |  Corsair Performance Series™ Pro 128GB, 250GB | High-end | Marvell 88S-9174 BKK2 | 500 | — | Find on Amazon |
| 7 |  ADATA SP920 128GB, 250GB, 500GB, 1TB | Mid-range | Marvell 88SS9189 | 560 | 72 | Find on Amazon |
| 8 |  Crucial BX300 128GB, 250GB, 500GB | Mid-range | Silicon Motion SM2258 | 555* | 160 | Find on Amazon |
| 9 |  Kingston SSDNOW KC100 128GB, 250GB, 500GB | Mid-range | SandForce SF-2281 | 555* | 640 | Find on Amazon |
| 10 |  Crucial M550 128GB, 250GB, 500GB, 1TB | Mid-range | Marvell 88SS9189 | 550 | 72 | Find on Amazon |
| 11 |  Crucial M550 mSATA 128GB, 250GB, 500GB | Mid-range | Marvell 88SS9189 | 550 | 72 | Find on Amazon |
| 12 |  ADATA SX930 128GB, 250GB, 500GB | Mid-range | JMICRON JMF670H (Comparável à um S | 550* | 280 | Find on Amazon |
| 13 |  Intel 520 128GB, 250GB, 180GB | Mid-range | LSI SandForce SF-2281 | 550* | 36 | Find on Amazon |
| 14 |  Intel 525 mSATA 128GB, 250GB, 30GB, 60GB, 180GB | Mid-range | SandForce’s SF-2281 | 550* | — | Find on Amazon |
| 15 |  Kingston SSDNOW KC380 128GB, 250GB, 500GB, 60GB | Mid-range | Sandforce SF-2241 | 550* | 1562 | Find on Amazon |
| 16 |  Kingston SSDNOW KC400 128GB, 250GB, 500GB, 1TB | Mid-range | Phison PS3110-S10 (4-Core, 55nm CM | 550 | 1600 | Find on Amazon |
| 17 |  OCZ VECTOR 128GB, 250GB, 500GB | Mid-range | Indilinx IDX500M00-BC Barefoot 3 | 550 | 36.5 | Find on Amazon |
| 18 |  OCZ VECTOR 150 128GB, 250GB, 500GB | Mid-range | Indilinx IDX500M00-BC Barefoot 3 | 550* | 91 | Find on Amazon |
| 19 |  OCZ VECTOR 180 128GB, 500GB, 960GB | Mid-range | OCZ Barefoot 3 M00 | 550* | 91 | Find on Amazon |
| 20 |  SanDisk EXTREME II 128GB, 250GB, 500GB | Mid-range | Marvell 88SS9187 | 550* | 80 | 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.
MLC NAND is older and costs more per gigabyte, but is very durable.
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.