OCZ Vector PCIe SSD

Discussion in 'Memory and Storage' started by christer12, Jan 7, 2013.

  1. christer12

    christer12 Member

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    LSI have no TRIM support and access time it's bad. You don't need 8 hard drives if you don't edit video.

    LSI suck. They are not for everyone. :colbert:
     
  2. AdamK47

    AdamK47 Lifer

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    Yeah, sure, OK. They suck. LOL

    Funny man says funny things.
     
  3. groberts101

    groberts101 Golden Member

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    while my system is certainly no slouch I sure wish mine sucked as bad as yours does Adam!
     
  4. AdamK47

    AdamK47 Lifer

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    I tried seaching for head to head benchmark results comparing access times of LSI controllers to the common Intel SATA3 controller. Didn't see anything. I did run a simple AS SSD benchmark on both and the access times were nearly identical with the same brand/model of drives, Vertex 4s.

    [​IMG]
    [​IMG]

    The drives are different in NAND. Intel for the 256 and Micron for the 512s.

    Let me know what access time benchmark to run and I'll run it.
     
  5. Ao1

    Ao1 Member

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    Wrong, LSI does support TRIM for single drive configurations, although not for RAID.

    Have you found out yet which SATA/SAS controller this new OCZ PCIe card is using yet ;)
     
  6. Ao1

    Ao1 Member

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    Hi Adam, I also have an Extreme11. Do you have a SB or IB CPU? Does the LSI need an IB for the max 3.8GB/s throughput?
     
  7. AdamK47

    AdamK47 Lifer

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    The LSI controller needs 8X PCI-E 3.0 lanes for the max 3.8GB/sec throughput.

    I have a 3960X SB-E on the X79 Extreme11. ASRock also has a Z77 Extreme11. The two boards are very different when it comes to PCI-E though.

    SB-E has 40 PCI-E 3.0 lanes. On the X79 Extreme11 it has 8 PCI-E 3.0 lanes from the CPU dedicated to the LSI SAS 2308 controller. The remaining 32 lanes are split to two PLX PEX 8747 bridge chips. 16 PCI-E 3.0 lanes each. Each chip doubles the 16 lanes to 32 for a total of 64. This allows for a 16x/16x/16/16x graphics card config even with the LSI controller having it's dedicated 8X PCI-E 3.0 lanes from the CPU.

    The Z77 Extreme11 is much more limited with IB and SB CPUs only having 16 lanes. The Z77 Extreme11 takes the 16 lanes and doubles them with a single PLX PEX 8747 bridge. 8 of those lanes go to the LSI SAS 2308 controller. The remaining lanes are then split up between the PCI-E slots. It allows for 8x/8x/8x graphics card config with the LSI controller enabled.

    I can see the LSI controller on the Z77 Extreme11 having higher latency since it has to go through the PLX bridge.
     
    #32 AdamK47, Jan 10, 2013
    Last edited: Jan 10, 2013