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Thread: Sata 6GB with GA-P55-UD3 (Marvell Controller)

  1. #1
    Join Date
    Oct 2011

    Question Sata 6GB with GA-P55-UD3 (Marvell Controller)

    So I recently purchased a Corsair Force 3 120 GB SSD to serve as my main boot drive for Windows 7 64-bit. I was able to install Windows with no problems and am now using it via the drive. It seems to be working fine, though not quite as snappy-fast as I was hoping for. I'm using a GA-P55-UD3 (rev 2.0) MB, which has both an Intel Sata controller (3GB/s) and a Marvell sata controller (6GB/s). Since the drive is "Sata 3" and supposed to be super fast, I decided to install it on the Marvell 6GB/s controller to take advantage of the drive's full speed.

    What I want to do is to confirm that the drive is actually working the way it's supposed to and actually running at full speed. I'm not sure how to do this. If I go into the Marvell Raid Utility (just for the info, I'm not running a RAID array), it says the drive is running at 6 GB/s. If I go into device manager, it's listed as running in UDMA Mode 4. Shouldn't it be Mode 6? I have the feeling something ain't right.

    My second question is regarding Trim. I know I need Trim to keep my SSD in top shape. I know Win 7 supports Trim. I know the drive supports Trim. But does the Marvell controller support Trim? I've spent some time on the internet trying to find out for sure one way or another. This seems like a mystery on par with JFK. Some people say it does support Trim. Some say it doesn't. Some say it only supports trim if you use the MS drivers. Some say trim is not controller-dependent at all (which I find hard to believe). Apparently Marvell has said they can't confirm whether it supports Trim or not (because they don't know the details of Gigabyte's implementation), but they're not saying it doesn't. And Gigabyte doesn't say anything about Trim at all that I've seen. So does it support trim or not? Does anyone actually know?

    Of course, the easy solution here is to just move the drive to one of the open slots on the other controller (Intel), which is Sata 3GB/s and which I know supports Trim. But if I can get the added speed of the 6GB/s controller, I'd like to have it. I know the real-world difference in performance between the two is small, but dammit, I want that difference, and I paid for a MB that supports 6GB/s!

    I did, didn't I?

    Any thoughts?
    Last edited by mdheller; 10-09-2011 at 03:26 PM.

  2. #2
    Join Date
    Jan 2011

    Default Re: Sata 6GB with GA-P55-UD3 (Marvell Controller)

    IMHO the marvelle ports are to be avoided. Better performance from Intel ports even though they are not sata lll.

  3. #3
    profJim's Avatar
    profJim is offline Chief Munchkin + moderator
    Join Date
    Dec 2008
    Tacoma, WA. [USA]

    Default Re: Sata 6GB with GA-P55-UD3 (Marvell Controller)

    A quick web search using: marvel vs intel sata performance included HARDOCP - Performance Testing and Conclusion - SATA 6Gb/s on Your New Motherboard? (page 2).
    I suggest checking out the best review sites for the most reliable information, especially where they prove that trim is or isn't functioning on a Marvel controller.
    Older Marvel controllers might not implement trim in a single drive setup.
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  4. #4
    Join Date
    Aug 2009
    Birmingham,Great Britain

    Default Re: Sata 6GB with GA-P55-UD3 (Marvell Controller)

    the marvell controllers arnt as reliable or as quick as the newer marvell ones or the latest intel sata3 ports found on sandybridge mb's,use atto disk benchmark to test read/write figures but dont run too many tests as it can degrade ssd performance

    as for trim it should be supported by windows 7 regardless of marvell/intel ports? maybe someone can comment further

    you might even see better speeds using the intel sata2 ports,and makesure your running in ahci mode in the bios for best ssd read/write figures
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  5. #5
    Join Date
    Oct 2011

    Default Re: Sata 6GB with GA-P55-UD3 (Marvell Controller)

    Thanks guys. I'm leaning toward thinking that the Marvell 9128 does in fact support Trim if used with Win 7 and the MS driver (not the Marvell driver). Do I have any hard evidence of this? No. But I have seen some reports that purportedly come from Marvell stating that this is the case, and most of what I've read on the 'net seems to agree with it.

    Regarding switching to the Intel iTE IT8213 SATA2 controller, I tried that and got worse performance than on the Marvell. So I'm back on the Marvell and we'll see how it goes.

    Thanks for your help!

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