Best 128GB Samsung SSDs
There are 8 128GB Samsung SSDs compared here. The fastest is the Samsung PM961 at 2800 MB/s read at 128GB, and the highest-rated for endurance is the Samsung 850 PRO (450 TBW). Sequential reads across the group span 520–2800 MB/s at 128GB.
Why this configuration
A 128GB Samsung SSD is a capacity-first shortlist. Everything here is available at this size, across interfaces and price tiers, so the choice comes down to how fast you need it and how much rewriting it will take. Samsung specifically tends to be chosen here for its firmware track record and warranty support.
At 128GB this is really a boot or cache drive rather than a main library.
Usually chosen for: buyers who have already settled on the size and are picking on specs.
Good fit: mainstream desktop and laptop builds.
Ranked list
Speeds on this page are the manufacturer's 128GB ratings where published (4 of 8 drives), not the family headline figure. 1 of the 8 are rated slower at 128GB than at their fastest capacity. Rated writes at 128GB run 320–600 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 |  Samsung 830 SERIES 128GB, 250GB, 500GB, 64GB | High-end | SAMSUNG S4LJ204X01-Y040 | 520 | — | Find on Amazon |
| 8 |  Samsung PM961 128GB, 250GB, 500GB, 1TB | Mid-range | Samsung Polaris Controller "S4LP07 | 2800 | — | 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.
Staying with Samsung means consistent firmware, tooling and warranty handling across the range.