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Plextor M8Se 256GB & 512GB NVMe PCIe SSD Review (Page 4)

By Jon Coulter from Sep 20, 2017 @ 5:15 CDT
TweakTown Rating: 87%Manufacturer: Plextor


Version and / or Patch Used: 3.05

ATTO is a timeless benchmark used to provide manufacturers with data used for marketing storage products. When evaluating ATTO performance, we focus on the drive's performance curve.



We are able to exceed factory sequential read/write performance specs for both capacity points.

Sequential Write


Graphing the performance curve reveals the 256GB M8SeGN outperforming the 256GB MLC powered M8SeY and of course the Intel 600p. The 512GB M8SeY as expected outperforms all three of those drives. Both test subjects are outperformed by the majority of the drives in our test pool. However, we do see excellent small-file performance delivered by both of our test subjects.

Sequential Read


Sequential read performance is important in an OS environment, and the M8Se delivers far better performance than the 3D MLC powered SX8000. Both M8Se variants exceed factory specifications but fall short of the performance delivered by the majority of the drives in our test pool.

Anvil Storage Utilities

Version and / or Patch Used: 1.1.0

Anvil's Storage Utilities is a storage benchmark designed to measure the storage performance of SSDs. The Standard Storage Benchmark performs a series of tests; you can run a full test or just the read or write test, or you can run a single test, i.e., 4k QD16. When evaluating performance with Anvils, we focus on the total score. When evaluating NVMe SSDs, we are typically looking for a minimum total score of over 10K. We place a greater importance on read performance than write performance.





In terms of total score, the 512GB M8Se gives us what we are looking for. The 256GB model doesn't get there. Looking at the read score (the score we place the greatest importance on) shows us that the 512GB M8Se outperforms all the drives in our test pool except Samsung's 960 EVO. Comparing the 256GB M8SeGN with the MLC powered M8PeY, we see the M8SeGN delivering better read performance. Very good read performance coming from both of our test subjects.

(Anvil) Read IOPS through Queue Depth Scale



We are able to greatly exceed factory max 4K read IOPS for the 512GB M8SeY. We don't quite get there with the 256Gb M8SeGN. Keep in mind that this is our system disk and it is 75% full.


Random performance is much more important than sequential performance for a system disk. Low queue depth random performance is more important than high queue depth performance. With those two previous statements in mind, the results of this test are quite impressive. This is a big win for Plextor's M8Se.

(Anvil) Write IOPS through Queue Scale



Both drives easily exceed factory max random write specs even though they are system disks 75% full.


Even though both drives are able to exceed factory specs for max 4K IOPS at QD32, they are both swimming at the bottom of our test pool at low queue depths. We would like to see better performance at low queue depths, but with planar TLC flash that's a hard nut to crack.

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