Random Read Performance

Our first test of random read performance uses very short bursts of operations issued one at a time with no queuing. The drives are given enough idle time between bursts to yield an overall duty cycle of 20%, so thermal throttling is impossible. Each burst consists of a total of 32MB of 4kB random reads, from a 16GB span of the disk. The total data read is 1GB.

Burst 4kB Random Read (Queue Depth 1)

The Optane SSD 900P doesn't break the record for QD1 random reads, but only because we've also tested the 32GB Optane Memory M.2, which is about two microseconds faster on average for each 4kB read. The Optane SSD 900P is still about 7 times faster than any flash-based SSD.

Our sustained random read performance is similar to the random read test from our 2015 test suite: queue depths from 1 to 32 are tested, and the average performance and power efficiency across QD1, QD2 and QD4 are reported as the primary scores. Each queue depth is tested for one minute or 32GB of data transferred, whichever is shorter. After each queue depth is tested, the drive is given up to one minute to cool off so that the higher queue depths are unlikely to be affected by accumulated heat build-up. The individual read operations are again 4kB, and cover a 64GB span of the drive.

Sustained 4kB Random Read

When longer transfers and higher queue depths come into play, the Optane SSD 900P passes the Optane Memory M.2 and remains more than 6 times faster for random reads than any flash-based SSD.

Both Optane devices more or less level off at queue depths of 8 or higher. The Optane SSD 900P saturates at about 1800 MB/s while the Optane Memory tops out around 1300 MB/s. The Samsung 960 PRO 2TB hasn't caught up by QD32, and doesn't surpass the QD1 random read performance of the Optane SSD until the Samsung reaches a queue depth of about 8.

Random Write Performance

Our test of random write burst performance is structured similarly to the random read burst test, but each burst is only 4MB and the total test length is 128MB. The 4kB random write operations are distributed over a 16GB span of the drive, and the operations are issued one at a time with no queuing.

Burst 4kB Random Write (Queue Depth 1)

The burst random write performance of the Optane SSD 900P is slightly higher than the Intel SSD 750 1.2TB, and about 14% faster than Samsung's fastest.

As with the sustained random read test, our sustained 4kB random write test runs for up to one minute or 32GB per queue depth, covering a 64GB span of the drive and giving the drive up to 1 minute of idle time between queue depths to allow for write caches to be flushed and for the drive to cool down.

Sustained 4kB Random Write

With higher queue depths in play, the Optane SSD 900P scales up faster than the Intel SSD 750 1.2TB, leaving the Optane SSD with a 7-10% lead over the Samsung 960s and Intel 750.

Samsung's 960 PROs and the larger 960 EVO all trail slightly behind the Optane SSD's random write performance for queue depths 1 to 4, then the Samsung drives level off and leave the Optane SSD with a substantial performance advantage at high queue depths. The Intel 750 is slightly faster at QD1 and QD2, but saturates at an even lower performance level than the Samsung 960s.

AnandTech Storage Bench - Light Sequential Performance


View All Comments

  • eddman - Friday, October 27, 2017 - link

    Nice deflection with "I did not meant it as fact since I didn't use such words." Reply
  • Notmyusualid - Friday, October 27, 2017 - link

    @ eddman

    I wish AT WERE bothered by him - he is distracting in so many articles, with his nonsense opinions, that I can't see any real discussion anymore.

    I doubt he has any foot in anyone's IT door, as he seems to have amazing amounts of free time to spend commenting on here. Meanwhile - I've been on the go since 05:30 this morning, come here to read about new tech, and yet again, this troll clogging up potentially useful discussion.

    I believe ddriver has a mental personality disorder, I'm just not sure which one, since schizoids and narcissists can be similar in some ways, and in no way am I a psych doctor.

    Therefore, I wish him nothing but the worst life has to offer.
  • lmcd - Friday, October 27, 2017 - link

    I don't care if he ends up with the worst life has to offer, I just want his internet to die for a month or two so we can see what normal comment sections look like. Reply
  • MamiyaOtaru - Tuesday, November 7, 2017 - link

    the fact that you think you need to explain the "hypetane" "joke", or that there's anyone who wouldn't get it, says everything that needs to be said about you. You probably felt super clever coming up with that one, cramming two words together like it was the height of humor, and that it was subtle enough some people wouldn't get it. Meanwhile, it was super obvious to *everyone*, so obvious that it isn't even close to funny. It's like you are operating on a lower mental plane and don't even know it, a dunning-kruger of humor. Reply
  • sonny73n - Tuesday, October 31, 2017 - link

    Lol. Brutal. Reply
  • Meteor2 - Tuesday, October 31, 2017 - link

    Ha ha, indeed!

    Please folks, don't reply to posts to ddriver. Don't even bother reading them. Don't feed trolls!
  • melgross - Friday, October 27, 2017 - link

    Trust me, you’ve already reached the level of pointless mediocrity. You can applaud your achievement. Reply
  • ddriver - Friday, October 27, 2017 - link

    Rule N1 - never trust people who say "trust me" ;) Reply
  • lmcd - Friday, October 27, 2017 - link

    So I'll never trust your objectivity.

    As if I needed incentive.
  • investlite - Monday, November 6, 2017 - link

    LOL! Mediocrity? It's only 2.7x faster. Since you love analogies, the tesla goes 0-60 in 3 seconds. This does it in 1.4 and you're calling it mediocre. We get it, your disappointed that it's not 1000x faster. Here's my question, how have you not let go of something a company said two years ago?

    Talk about limiting your mindset, you've restricted your expectations to a statement two years ago when we have a tangible product in our hands now. How about you worry about what we've got instead of what was said about it two years ago?

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