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  1. #1
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    Specs for a Specific Solid-State Drive

    Hi there -

    Wondering if anyone can do me a quick favor, since I'm getting conflicting answers from Dell.

    I'm looking at the following solid-state hard drive:

    256 GB Serial ATA Solid State Hard Drive for Dell Latitude E6400 Laptop

    Part #: 341-9940

    Can anyone confirm that this drive is Serial ATA 2 with a 2.5" form factor?

    Thanks a lot!

  2. #2
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    Everything I can find says its a 256GB 2.5" SSD with a SATA-150 interface.

    I'm a little surprised that it's SATA-150 (SATA rather than SATA-II) as I would have expected it to be at least SATA-II. Is that the inconsistency to which you refer?

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    Jon5 (2014-08-30)

  4. #3
    Super Moderator CLiNT's Avatar
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    Yes, I would have expected that too (SATA II). But your still going to see far better performance than a regular mechanical HDD.

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    Senior Member and Super Moderator -

    Thanks for your prompt replies. That's what I suspected: That Serial ATA-150 (found under the "Tech Specs" tab of the above page) indicates SATA, not SATA II.

    According to http://www.youtube.com/watch?v=BMvrV4ayHvA, SATA (150) runs at 1.5 GB/second, with an actual speed of 40MB/second, while SATA II runs at 300 GB/second, with an actual speed 80 MB/second.

    This seems like a significant difference. Unfortunately, Dell doesn't appear to make any SATA II drives that are 256 GB with a 2.5" form actor.
    Last edited by Jon5; 2011-08-03 at 12:11.

  7. #5
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    That's correct, by design, SATA-II has a faster interface than SATA-I.

    However as CLiNT suggested in practice you will still see a huge improvement in performance on SATA-I when compared to a mechanical Hard Drive. If you wanted to run a SATA-II drive, first double check the Dell machine has SATA-II, then look for a comparable 256GB SATA-II drive. Most SSD's will be SATA-II or SATA-III and you shouldn't be tied to Dell.

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