Best 128GB Plextor MLC SSDs
There are 4 128GB Plextor MLC SSDs compared here. The fastest is the Plextor M8PeY at 1600 MB/s read at 128GB. Sequential reads across the group span 540–1600 MB/s at 128GB.
Why this configuration
A 128GB Plextor MLC SSD is a legacy endurance choice. MLC stores two bits per cell instead of three, so these older drives take far more rewriting than a modern budget drive, at a much higher cost per gigabyte. Plextor 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: write-heavy secondary roles and keeping older machines useful.
Good fit: mainstream desktop and laptop builds.
Ranked list
Speeds on this page are the manufacturer's 128GB ratings where published (4 of 4 drives), not the family headline figure. 3 of the 4 are rated slower at 128GB than at their fastest capacity. Rated writes at 128GB run 340–500 MB/s.
| # | Model | Tier | Controller | Read MB/s (at 128GB) | TBW | |
|---|---|---|---|---|---|---|
| 1 |  Plextor M8PeY 128GB, 250GB, 500GB, 1TB | High-end | Marvell 88SS1093 | 1600 | 768 | Find on Amazon |
| 2 |  Plextor M8PeG 128GB, 250GB, 500GB, 1TB | High-end | Marvell 88SS1093 | 1600 | 768 | Find on Amazon |
| 3 |  Plextor M8PeGN 128GB, 250GB, 500GB, 1TB | Mid-range | Marvell 88SS1093 | 1600 | 768 | Find on Amazon |
| 4 |  Plextor M5 PRO 128GB, 250GB, 500GB | Mid-range | Marvell 88SS9187 | 540 | — | Find on Amazon |
The parts, explained
128GB suits a boot drive or a light secondary disk.
MLC NAND is older and costs more per gigabyte, but is very durable.
Staying with Plextor means consistent firmware, tooling and warranty handling across the range.