Sequential Read/Write Speed

To measure sequential performance I ran a 1 minute long 128KB sequential test over the entire span of the drive at a queue depth of 1. The results reported are in average MB/s over the entire test length.

Desktop Iometer - 128KB Sequential Read (4K Aligned)

Low queue depth sequential read performance is among the better drives, but still slightly behind Samsung.

Desktop Iometer - 128KB Sequential Write (4K Aligned)

Write performance continues to be the Vector's strong suit, here only Intel's SSD 520 with easily compressed data pulls ahead.

AS-SSD Incompressible Sequential Performance

The AS-SSD sequential benchmark uses incompressible data for all of its transfers. The result is a pretty big reduction in sequential write speed on SandForce based controllers.

Incompressible Sequential Read Performance - AS-SSD

High queue depth sequential IO shows significant clustering at the top of the charts thanks to the limits of 6Gbps SATA. The Vector pushes performance pretty much as fast as possible here.

Incompressible Sequential Write Performance - AS-SSD

Switching to writes does shake loose some of the weaker competitors, but the Vector and 840 Pro still emerge as the strongest. Corsair's Neutron GTX does very well here.

Random IO Performance Performance vs. Transfer Size


View All Comments

  • SodaAnt - Wednesday, November 28, 2012 - link

    Its way too large for a msata drive, so it wouldn't fit anyways. Reply
  • somebody997 - Thursday, April 11, 2013 - link

    Why is there an mSATA connector on the PCB anyway? Reply
  • somebody997 - Thursday, April 11, 2013 - link

    The PCB is far too large for an mSATA drive anyway, so why have the mSATA connector? Reply
  • Anand Lal Shimpi - Wednesday, November 28, 2012 - link

    That's likely a custom debug port, not mSATA.

    Take care,
  • Heavensrevenge - Wednesday, November 28, 2012 - link

    Actually that connection is indeed a physically identically sized/compatible m-SATA connection. The problem is it's inability to actually plug in due to the SSD's general size or whether it's able to communicate with the typical m-SATA ports on mobos. should give a decent example.
  • vanwazltoff - Thursday, December 20, 2012 - link

    might be a sign of something else in the works from ocz like an msata cable to plug into it or something, maybe something even more awesome like double the band width by connected it to a ocz pci break off board. i guess we will see Reply
  • mayankleoboy1 - Tuesday, November 27, 2012 - link

    I have a Vertex2 256GB SSD.
    Is it worth upgrading to a Vector or a Samsung840 Pro SSD ?
  • MadMan007 - Tuesday, November 27, 2012 - link

    If you've got a motherboard with SATA 6Gb/s you would probably notice a difference. Whether it's worth it is up to you - do you do a lot of disk-intensive work to the point where you wish it were faster? While I'm the difference would be noticable, it might not be huge or worth spending $200+ on. Reply
  • MrSpadge - Wednesday, November 28, 2012 - link

    Are you often waiting for your disk to finish tasks? If not it's not going to be worth it. Reply
  • Beenthere - Tuesday, November 27, 2012 - link

    It's going to take more than a nice type written letter to resolve the many product and service issues at OCZ - if they stay in business over the next six to 12 months.

    FYI- A five year warranty ain't worth the paper it's written on if the company no longer exists. In addition a five year warranty does not mean that a particular product is any better than a product with a one year warranty. For each extended year of warranty, the product price increases. So you're paying for something you may or may not ever use.

    In addition it's useful to read the fine print on warranties. Most state that you will receive a refurbished or reconditioned replacement if your product develops a defect. If you've ever seen some of the "reconditioned" or "refurbished" mobos from Asus or similar products from other companies, you'd never install them in your PC.

    People reach many untrue conclusions about product quality based on the warranty.

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