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OCZ Vertex 4 128 GB: Revisiting Write Performance With Firmware 1.5

Firmware 1.5: Iometer Test File Monitoring

After secure erasing the Vertex 4, we created a test file using Iometer that filled the drive with 64 KB sequential blocks and monitored write activity at the physical device using Window’s Performance Monitor.

As the file is created, performance drops when capacity shrinks below 50%. Write speeds, specifically, decelerate from a maximum of maximum of 352.42 MiB/s to a minimum of 64.31 MiB/s.  

Next, we place 50% static data on the drive and use Iometer to recreate a test file that fills the remaining 59.5 GB. Once 50% of the still-available capacity is consumed, write speeds drop from a maximum of 356.12 MiB/s to a minimum of 73.31 MiB/s.

Finally, we place 74% static data on the drive and use Iometer to recreate a test file that fills the remaining capacity. Before we can get to 50% of what's left, write speeds quickly drop from a maximum of 363.22 MiB/s. Because this happened so close to when monitoring began, zero writes are recorded before the file transfer starts to peak and drop to around 73.31 MiB/s.

These results mirror our observations using HD Tune.

  • DeusAres
    Good idea I suppose. Nothing that's going to particularly influence my decision. Probably gonna be sticking with either a Crucial or Corsair SSD. :)
    Reply
  • mayankleoboy1
    on pages 6 and 7, the author of the article is shown as "Chris angelini"
    the rest of the pages show "Richard Hart"
    Reply
  • mayankleoboy1
    does the rearrangement of data occur only during a reboot cycle?
    how much idle time is needed for the data rearrangement to take place?
    And what is the authors recommendation on a Vertex4? should a user buy Vertex 4 over a Samsung/Sandforce?
    Reply
  • lutel
    Does this SDD support full disk encryption with any of the Intel desktop mainboards (Ivy Bridge)? AFAIK Intel is not supporting FDE since Q67 and although Q77 is capable of FDE, there is no mobo with BIOS that can support it. Could Tomshardware investigate it?
    Reply
  • TheSandman
    So keep the disk under half full and it wears out twice as fast?
    Does the performance mode mean that the wear leveling is constrained to the first bit of every cell and therefore the drive wears out quicker compared to normal mode?
    Reply
  • I went from firmware 1.3 to 1.5, the performance increase is huge, but the down side is that the drive is not 128GB anymore but only 120GB. Has anyone else seen this issue also? Did OCZ reserve more spare?
    Reply
  • JohnnyLucky
    How many additional firmware updates are needed before OCZ gets it right?
    Reply
  • redgarl
    AnonymousI went from firmware 1.3 to 1.5, the performance increase is huge, but the down side is that the drive is not 128GB anymore but only 120GB. Has anyone else seen this issue also? Did OCZ reserve more spare?It is actually occuring with update 1.4. Hmm, damn I need to do another clone disk before doing the update.
    Reply
  • kissingman
    Bother! I just purchased one.The more worse is this one has updated to firmware 1.4.
    Reply
  • blazorthon
    JohnnyLuckyHow many additional firmware updates are needed before OCZ gets it right?
    Do you dislike manufacturers improving their products without demanding that you pay more money for the improvements?
    Reply