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Plextor M6 Pro 128GB SSD Review

By: Chris Ramseyer | SSDs in Storage | Posted: Feb 10, 2015 3:10 pm
TweakTown Rating: 92%Manufacturer: Plextor

HD Tune Pro - Sequential Performance


Version and / or Patch Used: 5.50




We have most of the drives that matter in the chart, although there are a few missing, like the 850 EVO, since we haven't focused much on this capacity. The Plextor M6 Pro 128GB performs well in our 64KB sequential read test, but falls to drives like the 850 Pro, the older 840 Pro, and the Extreme II. The drive nearly matches the older Plextor M5 Pro in average sequential read performance.




Write performance has become an issue on newer SSDs with 128Gb die. The larger die size means less flash is used, and this lowers parallelism, or writing to more than one die at a time. The new M6 Pro 128GB is a little slower at sequential writes than the M5 Pro 128GB.



HD Tach - Sequential Write Performance after Random Writes


Version and / or Patch Used:




After a number of sequential and random writes to the device being tested, we measure 128KB sequential performance with HD Tach. The sequential read performance portion of the test turned out very well with an average speed of nearly 450 MB/s. We tend to focus more on the write portion of the test because it allows us to see the effect of previous writes to the drive, and how the drive is able to write with dirty cells. The M6 Pro 128GB shows several drops in write performance that go well under 25 MB/s.

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