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Plextor M6e Black Edition 128GB PCIe SSD Review (Page 4)

By Chris Ramseyer from Feb 9, 2015 @ 21:14 CST
TweakTown Rating: 88%Manufacturer: Plextor

HD Tune Pro - Sequential Performance

Version and / or Patch Used: 5.50


There isn't a lot of variation between the three M6e Black Edition products in the sequential write tests with 64KB data. However, the one thing you will notice is that the original M6e with the first release firmware is a bit faster than the three Black Edition products. Plextor traded some sequential performance for better random performance with later firmware releases.

Plextor's only competitor in the native PCIe M.2 form factor at this time comes from Samsung. Samsung released the XP941 as a product for system integrators to use, but some resellers like RamCity managed to secure a steady supply of the product. The XP941 uses PCIe 2.0 x4, which is twice the number of lanes of the M6e products.

As you can see, the Samsung XP941 drives read sequential data back faster than the M6e Black Edition drives, and the gap is quite large even though the prices are very close to each other in dollars per gigabyte. The XP941 products do not ship with the adapter or the heat sink bling that the Black Edition ships with though.


For the product we're testing today, sequential write performance is the Achilles Heel. After you spend ten hours downloading a new game, you want to install it as fast as possible. Sadly, the 128GB Black Edition will not give you the speed you are looking for out of a shiny new PCIe SSD.

HD Tach - Sequential Write Performance after Random Writes

Version and / or Patch Used:


After a reasonable number of sequential and random writes to the drive, we ran HD Tach to measure sequential performance at 128KB. The read performance remained fairly consistent, but the write performance dropped in several areas. The sequential write performance fell below 25 MB/s six different times. We didn't have this issue with the two larger models in the Black Edition product family.

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