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Thread: Udma 7?




  1. #1
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    Default Udma 7?

    I ran HD Tune to check Info among other things for my new SSD Intel X25-M not formatted, waiting for Windows 7, and while it says UDMA 6 supported, it says Active UDMA 7 ATA/512. Does that make any sense? I have the EX38-DS4 MB.


  2. #2
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    Default Re: Udma 7?

    Dont really know but I would want active Mode 7 over Mode 6. It looks like it would be faster. Try Googgiling it.
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  3. #3
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    Default Re: Udma 7?

    Thaqt's very strange! I recommend you post me your X25-M so I can.. erm.. fix it for you. ;)

    Seriously though, there's nothing to worry about. UDMA mode 7 = SATA I spec and UDMA mode 8 = SATA II. Strangely, even though it says UDMA mode 6 is active, you will still get full speed from your device.

    To put your mind at rest, I would format the drive as data storage for now and run the HD Tune benchies plus AS SSD, which is now used by the majority of publications to test SSD's. Download from here (site is German but they have kindly included a little English so you can see where to download): Alex Intelligent Software - Downloads: AS SSD Benchmark

    Sometimes HD analysis tools report DMA modes erroniously, other times they are measuring the internal speed, or the interface speed. These don't give a true indication to actual performance. Things such as Burst Transfer refering to data going from cache to interface etc etc, all different terms that mean good performance in different areas.

    Have a look to see if there's a firmware update for the drive too. Intel are generally good with bringing updates to end users in this regard. Also make sure to install the latest drivers for your Intel SATA ports (either ICH9R or ICH10R, not sure on X38). If using the cable supplied by intel then you're fine, but if it came with no SATA cable, make sure the one you're using is undamaged, thickly insulated and is of the push-and-click type, as they're virtually guaranteed to be of the SATA II generation. This may not matter, but if you do experience performance problems, this, plus a look in the BIOS of the mobo may help.
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  4. #4
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    Default Re: Udma 7?

    I have the latest drivers installed for my X38 ICH9R chipset and all looks well, except for that crazy UDMA thing. I formatted the drive and ran a test with that AS SSD software and results below. The AS SSD does not show UDMA. Any reason why it says IDE and not SATA?


  5. #5
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    Default Re: Udma 7?

    Because SATA is IDE. Both SATA and ATA are IDE drive types, the difference is in the data transfer method and cabling. SATA is serial transfer, ATA is parallel.

    From the looks of those figures, all is well. For example sequential read is well above the SATA I spec of 150MB/s and close to the SATA II limit of 300MB/s, meaning the drive is taking as much advantage of SATA II as it can. Not the best 4K random read figure, but certainly not the worst, and bang on par for an X25-M. It's going to be a very fast main drive.
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  6. #6
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    Default Re: Udma 7?

    Well, then I don't give a damn what UDMA mode it is in.

    Yes, I will be using it as my main drive for Windows 7.

    Thanks for your help.

    I do have one more question about AHCI, should I let Windows 7 install the driver or should I use the latest one from Intel?

  7. #7
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    Default Re: Udma 7?

    When I've built a system using the controler in AHCI mode, or when I've installed using it on this system in the past, I just make sure AHCI is set in the BIOS, and Win 7 has taken care of the rest. Installing the latest Intel .inf update after installation is recommended though.

    The only time I've needed drivers at install time with Win 7 was when using RAID.

    I'll be getting myelf a SSD soon, but I need something much cheaper than the Intel X25 series. I think I'll go with a 60GB OCZ Vertex. Later on I can grab another and hook them up in RAID0. intel X25's are ~400 here. I think I can get hold of a Vertex for ~120 (hopefully).

    You've got me thinking now... maybe I can order one monday.... I should be playing with it by Wednesday then...

    The Intel drive doe sperform a bit better in some real world tests, and performs much better than the low(ish) random 4K results suggest it would, proving that synthetics aren't a true reflection of real world performance.

    Any time I or anyone else here can help, just post, It's not a problem. Some feedback on how it runs when you get Windows & through the door would be great, if you have the time to post. I've pre-ordered my copy too, so there's not long to go. Hopefully the auto TRIM feature will be ready to go from day one too.
    Coolermaster CM 690 II advance Case
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    P55A-UD4 v2.0 @ F14
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    TRUE Black with a single Noctua NF-P12 pumping out 55 CFM @ 19db .
    2 x 2GB Mushkin Ridgeback (996902), @ 7-10-8-27, 2010-DDR, 1.66v
    2 x Gigabyte GTX 460 1024MB in SLI (Pre OC'd to 715MHz core and 1800MHz VRAM) @ 850 Core / 4100 Mem.
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    Corsair X32 200MB/s Read & 100MB/s Write
    WD Caviar Blue 640GB C (Steam, Games, Storage, Temp Files & Folders, etc)
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  8. #8
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    Default Re: Udma 7?

    "Installing the latest Intel .inf update after installation is recommended though."

    You have me a bit confused on that one. Is that this http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&ProdId=816&DwnldID=18052〈=e ng

    If it is, I believe you can just execute by double-clicking and it pretty much does the rest, but don't you have to install the Intel Matrix Storage Manager after, even for just AHCI?

  9. #9
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    Default Re: Udma 7?

    For Win 7 to use ACHI and NCQ, the Matrix Driver isn't essential. Win 7 supports all the features of AHCI natively already. I see no harm n using the Matrix Driver if you want to though.

    The last time I built a system where someone insisted they had AHCI and NCQ was on a P35 with the ICH9B chipset. This chipset supports AHCI and NCQ, but the Matrix Storage Driver won't install, as an ICHxR version is required. The Matrix Storage Driver seems much more geared towards RAID.
    Coolermaster CM 690 II advance Case
    Corsair HX750 (CWT, 91%(80+ Gold rated @230V) single 62A 12V rail
    P55A-UD4 v2.0 @ F14
    Core i5 760 @ 20 x 201, 4.02GHz
    TRUE Black with a single Noctua NF-P12 pumping out 55 CFM @ 19db .
    2 x 2GB Mushkin Ridgeback (996902), @ 7-10-8-27, 2010-DDR, 1.66v
    2 x Gigabyte GTX 460 1024MB in SLI (Pre OC'd to 715MHz core and 1800MHz VRAM) @ 850 Core / 4100 Mem.
    Intel X25-M Boot Drive (OS and Programs) 200MB/s Read & 90MB/s Write
    Corsair X32 200MB/s Read & 100MB/s Write
    WD Caviar Blue 640GB C (Steam, Games, Storage, Temp Files & Folders, etc)
    Samsung F3 500GB Backup/Images
    Noctua 1300RPM 19dB case fan (rear extraction)
    3 x 140 MM Coolermaster LED fans (one front intake, one top extraction, one side intake)
    Dell Ultra Sharp 2209WAf E-IPS @ 1680x1050

  10. #10
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    Default Re: Udma 7?

    So when you say to update with latest .inf after installation, do you mean running this http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&ProdId=816&DwnldID=18052〈=e ng or?

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