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Plextor M6 PRO SSD with PlexTurbo Caching Layer Technology Preview

By: Chris Ramseyer | SSDs in Storage | Posted: Aug 25, 2014 2:10 pm

Crystal Disk Mark


Version and / or Patch Used: 3.0 TP1




The first series of tests I'm showing today come from a desktop system with the Plextor M6 PRO as a secondary drive, like how we review single SSDs. Later in this preview, we'll show the M6 PRO as the boot drive, with and without PlexTurbo installed.


I wanted to start out with CDM so we could get the sequential reads and writes out of the way. 551 on the nose is a solid result for sequential reads and 490 MB/s sequential write is fast, but we'd like to see some more performance in this area.


Plextor will market the M6 PRO for gamers and enthusiasts. The M6 PRO surpassed 40 MB/s in 4K queue depth 1 random reads, a result very few drives can achieve. Let's take a closer look at that random performance.



Random IOPS




This is a new chart that I've wanted to use for a long time now. In the chart, there are three groups of results - random read IOPS (bottom), random write IOPS (middle) and at the top is a new data set, mixed IO IOPS (top).


Starting at the bottom, the Plextor M6 PRO nearly reaches the magic 10K read IOPS mark at QD1 that very few drives are able to reach. In the desktop system, the M6 PRO delivers just over 99K read IOPS at QD32. Later in the review with the operating system on the M6 PRO, we actually surpassed the 100K mark, but let's not get too far ahead of ourselves right now.


The middle group is the 4K random write IOPS performance for the M6 PRO. The drive does very well here too.


The top group is a metric we haven't published before here at TweakTown. This is mixed IO IOPS performance. This group of tests starts at QD2 instead of QD1 because each read and write command adds to the queue depth. You can't have a mixed read and write IO at QD1. In this test, we also scale to QD64, even though the SATA III dataset doesn't scale to QD64. This is a metric we can take advantage of in the future with NVMe.



PCMark 8


Version and / or Patch Used: 2.1.274




The last test in our preview for the M6 PRO as a secondary drive is Futuremark's PCMark 8. This test took just over an hour to run and in that amount of time the M6 PRO averaged 284.16 MB/s. Even though the Plextor M6 PRO 256GB is still a beta product for reviewers, it's already faster in this test than the Samsung 850 PRO 128GB. The 850 PRO 128GB scored 275.71 MB/s in the Storage Bandwidth Test.

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