Conclusion, Pricing, and Final Thoughts



  • Good sequential performance
  • IOPS performance at lower queue depths comparable to high end SATA units
  • Cost/GB is very competitive for a PCIe SSD
  • No driver required – uses the standard Windows Inbox SCSIPort driver
  • Bootable


  • PCIe 2.0 x2 link not fully utilized by Marvell controller
  • PCIe version priced at a high premium over the M.2 version
  • Warranty VOID sticker prevents penalty-free conversion between PCIe and M.2 form factor

Pricing and Availability:

Plextor M6e M.2:

  • 128GB – $129 ($1.01/GB) Amazon
  • 256GB – $235 ($0.92/GB) Amazon
  • 512GB – $410 ($0.80/GB) Amazon

Plextor M6e PCIe:

  • 128GB – $160 ($1.25/GB) Amazon
  • 256GB – $270 ($1.05/GB) Amazon
  • 512GB – $460 ($0.90/GB) Amazon

Phoenix Blade:

  • 480GB – $700    ($1.46/GB) Newegg

Compared to the direct competitor, the RevoDrive 350, currently at:

  • 240GB – $517    ($2.15/GB) Amazon
  • 480GB – $800    ($1.67/GB) Amazon
  • 960GB – $1,280 ($1.33/GB) Amazon


The Plextor M6e ships with a 5-year warranty, while competing PCIe units (G.Skill Phoenix Blade / OCZ RevoDrive) carry a 3 year warranty.

Final Thoughts:

The Plextor M6e is an impressive little PCIe SSD that is available in half height PCIe as well as an even smaller M.2 2280 form factor. It's Marvell controller and Toshiba flash perform comparably to the random IO performance of modern SATA units, but with a bit of added headroom provided by the PCIe 2.0 x2 interface. While it can't compete with the raw sequential throughput of competing PCIe SSD RAID solutions, it does outmaneuver them at lower queue depths, doing so with significantly lower latency per IO. The M6e is also far cheaper than those same competing units, but we feel the price is still a bit high given this particular model's specs and performance. Given the 5 year warranty, it is entirely possible that a buyer would need PCIe now and M.2 for their next motherboard purchase, but the inability to remove the M.2 device from its half-height PCIe converter without voiding that warranty is an unnecessary limit in my view – That flexibility should be afforded to buyers willing to pay the $35-$50 premium over the bare M.2 part. Overall I was impressed with the performance of the M6e. It's a great first step for Plextor into the field of PCIe SSDs, and given the flexibility of that interface, things can only get faster moving forward.

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