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Thread: interesting developments re sandforce drives

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    Default interesting developments re sandforce drives

    Check this out. I figured I would do a test to see how fast the Vertex 2 really writes compared to a Indilinx. Here is what I did. I copied a 15gb file containing all the software I use for my install. That file contains my Drivers, Music, Pictures, Word Documents, Favorites, Adobe CS4, AutoCad 2010, Chief Architect X1, Office 2007, Nero 9, and other assorted software. I copied it from one Indilnx Drive to another Indilinx Drive it took 2 minutes and 50 seconds. Then I copied the same file again from an Indilinx Drive to my Vertex 2. It took almost 5 minutes! WTF? What is going on? I thought I was correct in assuming that AS SSD and CDM were incorrect when they both showed that the Indilinx had much faster sequential writes than the Sandforce. ATTO and winsat disk both showed the Sandforce to be way faster with sequential writes so I assumed they were correct and CDM/AS SSD incorrect. I think my real world test proves the Sandforce Drives have a real problem with large sequential writes. The Sandforce started off writing the file at 233 mb/s and settled in at 67 mb/s. The Indilinx started off writing at 150 mb/s and settled in at around 100 mb/s. Then to top if off I deleted the 15gb file from the Sandforce Drive waited a few minutes and ran CDM and was astonished to see sequential writes of only 55 mb/s. What happend to the TRIM? Does not seem to be working properly. Now I am of the opinion that the mighty Sandforce might not be so mighty when it comes to sequential writes. I think I will do a secure erase re-image and test again. I had been hearing rumors of just this sort of thing but i didn't believe it. Now I am reconsidering my position on the matter.

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    Default sandforce findings

    Ok, I did a secure erase of my 50gb Vertex 2. Found out a few interesting things while attempting the secure erase. HDDERASE 3.1 does not work. HDDERASE 3.3 does work provided you are using a machine with a compatible chipset, sata is in IDE compatibility ( not enhanced ) mode. The secure erase takes less than 2 seconds because what it does is reset the controller not write to the nand. The secure erase DID NOT improve any of my benchmarks which are as follows:




    This leads me to believe 2 things. The 50gb Vertex 2 is not as fast as the 100gb Vertex 2 and from what my research on the OCZ Forums seems to indicate is that the Vertex 2 is not quite as fast as the Vertex LE. With this in mind I went and got a Vertex LE 100gb today at my local MICRO CENTER. The first thing I did was update the FW from 1.00 to 1.05. In doing the FW update ( which must be done from within Windows and the drive installed as a secondary drive ) the sata mode must be set to ahci or the update will fail. After updating the FW I re-imaged to the LE and ran some benches that seem to confirm my suspicions that the Vertex 2 and especially the 50gb Vertex 2 are not as fast as the Vertex LE 100 gb. Here are the LE benchmarks:




    I say get the Vertex LE while you still can. I hope this is helpful
    Last edited by obamaliar; 29-05-2010 at 20:51.

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    Default

    I have a feeling that the OCZ 128GB Enyo USB3.0 portable SSD we have for review is going to blow all of them away.

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    Quote Originally Posted by Doctor_Death View Post
    I have a feeling that the OCZ 128GB Enyo USB3.0 portable SSD we have for review is going to blow all of them away.
    I will be pleasantly suprised if it does.
    Last edited by obamaliar; 30-05-2010 at 22:57.

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    Default something of note

    if you do this uncheck both boxes ( and restart )
    there will be no change in speed of drive cause there is no cache on the sandforce drives. look benched before unchecking both boxes


    and after unchecking both boxes


    and according to one guy (sprogis) on ocz forums. unchecking both boxes keeps drive from degradeing over time. I can tell you this for certain there is absolutely no performance hit with both boxes unchecked.

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    Default

    Interesting............

    SSD tech is changing so fast we're all still in a learning curve.

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