Inside the M5 Pro

The external design is still the same as in the M3 Pro. Likewise, the M5 Pro measures in at 7mm height.

Plextor provides a variety of add-ons in the retail package. There is a 2.5" to 3.5" adapter, mounting screws and NTI's SSD utility suite including clone, backup and SSD performance tools (though I've heard the bundled software may be regional. Some European buyers of the M3/Pro have said that their SSD came with Acronis' SSD tools). 

Opening up the M5 Pro reveals eight NAND packages and two SDRAM chips. The specific part number for the NAND is TH58TEG8D2JBA8C. The eleventh letter, J, indicates that the manufacturing process is 19nm as the naming system is alphabetical: A stands for 130nm, B for 90nm and so on. The second last character, which is an 8, reveals that the package is quad-die (32GB) and that Toshiba's 19nm MLC die is still 8GB.

Many of you are probably wondering whether endurance has declined with 19nm NAND. Toshiba is very quiet about their NAND so we have absolutely no official word on the P/E cycle count. However, if IMFT's 20nm NAND is anything to go by, we should still expect to get ~3000 P/E cycles out of 19/20nm NAND. We are still nowhere near P/E cycle figures where endurance would seriously be an issue, as we have explained several times in the past.

Our 256GB model has 512MB of cache, which is provided by two 256MB Nanya DDR3-1333 chips.

This is it: The Marvell 88SS9187-BLD2. No specific details are known about the new controller, other than that it supports SATA 3.1 and promises "best-in-class" random read/write performance. SATA 3.1 doesn't bring any significant improvements, altough it brings support for mSATA as well as queued TRIM command (the controller can put the TRIM command in queue and keep doing regular operations until it's free to run the TRIM command). Reduced power consumption is also listed in the release notes, although I doubt we'll see any substantial gains.

Test System


Intel Core i5-2500K running at 3.3GHz (Turbo and EIST enabled)


AsRock Z68 Pro3


Intel Z68

Chipset Drivers

Intel + Intel RST 10.2

Memory G.Skill RipjawsX DDR3-1600 2 x 4GB (9-9-9-24)
Video Card XFX AMD Radeon HD 6850 XXX
(800MHz core clock; 4.2GHz GDDR5 effective)
Video Drivers AMD Catalyst 10.1
Desktop Resolution 1920 x 1080
OS Windows 7 x64


Introduction Random & Sequential Read/Write Speed


View All Comments

  • TemjinGold - Friday, August 31, 2012 - link

    Was looking forward to this drive beating the Vertex 4 but not only does it not do that, it also costs a ridiculous amount... Reply
  • scottwilkins - Friday, August 31, 2012 - link

    I'd call it a win if Plextor does better with less DOA units and better customer support. Every OCZ I've bought has required a firmware update, which are hard to do at best to start with. And I've just had too many OCZ failed drives. Sometimes second place is better, and in this case it might very well be so. Reply
  • LB-ID - Friday, August 31, 2012 - link

    Amen to that, brother. OCZ drives are released in an alpha/beta state, and their support is simply atrocious. I'd far rather pay a little more and deal with a reputable company than go through the nightmare that is 'working' with OCZ. Reply
  • heffeque - Friday, August 31, 2012 - link

    Plextor, unlike OCZ, does have a 5 year warranty... Reply
  • extide - Saturday, September 1, 2012 - link

    actually, all Vertex 4's have 5 year warranty too Reply
  • TemjinGold - Friday, August 31, 2012 - link

    I would agree if they were close to the same price. Plextor is better but not for nearly 2x the price. Reply
  • hansmuff - Friday, August 31, 2012 - link

    Kind of depends on how much your time is worth. If you have a lot of downtime due to the SSD crapping out, the Plextor might be well worth it. Reply
  • CeriseCogburn - Friday, August 31, 2012 - link

    That's another reason why nVidia wins over amd gpu's. Reply
  • iamezza - Saturday, September 1, 2012 - link

    piss off troll Reply
  • stalker27 - Tuesday, September 4, 2012 - link

    :) ... he probably didn't get that "piss off troll" translates to "over the past years several large EU retailers have released reliability reports and AMD, in the graphics department, did some of the most reliable cards, Nv... not so much. Cudos to AMD's partners! RIP BFG! Reply

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