Apple Does it again SATA 1.5 in a 2010 i7 MBP 15!

Discussion in 'MacBook Pro' started by magbarn, Apr 30, 2010.

  1. magbarn macrumors 68000

    Oct 25, 2008
    Just received my CTO 15 i7 500gb 7200rpm and guess what? Apple is still CAPPING the SATA 3Gbps chipset at 1.5?! (see pic below, notice "Negotiated Link Speed") Is this barrier removed if you put in a SSD? I'm still on the fence on placing an order for an Intel 160gb SSD...

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  2. Rhalliwell1 macrumors 6502a

    May 22, 2008
    And the bottle neck in your system? That 7200RPM drive.
  3. spinnerlys Guest


    Sep 7, 2008
    forlod bygningen
    Doesn't this just mean, the interface negotiated with the HDD, that S-ATA 1.5Gbps would suffice?

    My 2007 Aluminium iMac shows this:


    I'm confused, but the 1.5Gbps are still more than efficient with its 148MB/s
  4. Hellhammer Moderator


    Staff Member

    Dec 10, 2008
    Could be as my iMac's HD is 3Gb/s but SuperDrive is 1.5Gb/s (link is 3Gb but negotiated is 1.5Gb). Both use NVidia MCP79 AHCI chip
  5. Fry-man22 macrumors 6502


    Nov 25, 2007
    The chipset is fine - it's the drives they are shipping that negotiates the 1.5Gbps link speed. Look at mine with a Samsung 3.0Gbps drive. My Seagate 7200K 500 is only 1.5...

    The 2.5" drive is not fast enough to max out the 1.5 so I'm OK with the shipping drive not being 3.0.

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  6. daneoni macrumors G4


    Mar 24, 2006
    My 320GB 7.2K RPM Seagate drive shows this...granted my MBP is an early 09 model so this probably doesn't help you. Like others have said the drive will never saturate the bus so its all good anyway.

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  7. shoppy macrumors 6502a

    Mar 4, 2007
    Mine is 3 gigabits negotiated on an i5 2.4 mid 2010.

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  8. magbarn thread starter macrumors 68000

    Oct 25, 2008
    What about people with SSD's? Are your 2010 MBP's also capped at 1.5? I have a Retail Seagate 7200.4 500gb I'm going to put in the computer for a test-drive and see if it's just a artificial firmware cap placed by Apple on seagates.
  9. Dragonforce macrumors 6502a


    Apr 9, 2008
    London (Ealing) UK
    Intel G2 Postville in my new i5:

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  10. kgeier82 macrumors 65816

    Feb 18, 2008
    Its just some of the drives they use people!

    Shame how its kinda funny I buy the i7 2.66 AG, and I get a 1.5 drive :)

    What Id like to know, straight from Toshiba's website:
    Further design optimizations boost the durability of the MKxx55GSX line-up, providing industry-leading robustness against shock while the drives are in operation. An operational free-fall sensor (FFS) feature further protects the drive and user data against potential damage from shock, vibration and rough handling. The MKxx55GSX products support a 3 Gb/sec data transfer rate and have passed testing by the Serial ATA International Organization (SATA-IO) for SATA interoperability.


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  11. alphaod macrumors Core


    Feb 9, 2008
    It doesn't matter; if your drive needs SATA 3Gb/s it will negotiate it.
  12. kgeier82 macrumors 65816

    Feb 18, 2008
    Youre right it doesnt matter, but if the drive is SATA30 and the computer is, it should be so, period. Im wondering if Apple has a custom firmware on the Toshiba.

    I could really care less, since none of these drives can even touch SATA 150

    Nice join date alphaod, haha
  13. alphaod macrumors Core


    Feb 9, 2008
    The "negotiated" speed is a new form they added; so if this was ever an issue before we would not know as it was not viewable previously.

    So it's possible the Macs have had this phenomenon for a while, just that no one could tell.
  14. m85476585 macrumors 65816

    Feb 26, 2008
    1.5 gbps probably lets them save a little power.
  15. shoppy macrumors 6502a

    Mar 4, 2007
    I will try my stock 320gb HDD I am using my own 500gb HDD.
  16. Eddyisgreat macrumors 601

    Oct 24, 2007
    Which macs?

    The first gen non unibooty mac has a 1.5Gbps bus even when using an SSD (I should know :()

    Then the unibooty ones brought 1.5Gbps, in which everyone on the boards freaked the heck out. The firmware update resolved that issue.

    But yes, the latest MBP will negotiate whatever speed is necessary.
  17. kayloh20 macrumors regular

    Apr 8, 2010
    Chicago, IL
    2010 i7 17" shows 3 Gigabit for both my SSD and my ExpressCard SSD. Only the Superdrive is 1.5 Gigabit.
  18. tekmoe macrumors 68000

    Feb 12, 2005
    i'm showing 3.0. i swapped the stock 5400rpm drive with a new hitachi 320gb 7200rpm drive and converted the stock drive to a time machine backup disk. :D

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  19. frostiex macrumors regular


    Apr 15, 2010
    My SSD shows 3. However, the super drive is 1.5

    but what superdrive will never use up that

    btw...I have the 2010 MPB i7. 15"

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  20. underblu macrumors regular

    Apr 19, 2010
    the link speed is the bandwidth limit of the actual connection
    the negotiated speed is the actual connection speed and determined by the attached drive.

    Most 5400 and even some 7200 will connect at 1.5 while SSD drives will typically connect at 3.0

    So to make it even more clear, if your negotiated connection says 1.5 but you later replace that drive with say an SSD that connects at 3.0 than your negotiated speed with say 3.0
  21. vant macrumors 65816

    Jul 1, 2009
    Exactly. No issues here.

  22. kgeier82 macrumors 65816

    Feb 18, 2008
    So heres my question/issue with all this guys:

    If OSX now auto negotiates based on hard-drive need, and I have a SATA300 Hard drive as stated by specs on TOshiba site (note this is the stock APple HD), then why isnt it kicking to 300? Does apple load custom firmwares?
  23. Heilage macrumors 68030


    May 1, 2009
    I had an SSD in my MacBook, at that time it was 3Gbps (even posted a screenshot here at some poing). Now there's an HDD there, and it's 1,5Gbps. As long as the SSD I'm getting now (Intel X-25M Gen2) negotiates at 3Gbps, I'm happy. :)
  24. Pentad macrumors 6502a


    Nov 26, 2003
    I use multiple VMs in Virtualbox and went with a ST9500420AS 7200 RPM drive and made sure it was a SATA 3 GB drive. I'm kind of shocked Apple would ship a new MBP with a 1.5 GB drive. :eek:

    Like I said, I'm doing multi-vms so I'm trying to push the drive as hard as I can...

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  25. macchiato2009 macrumors 65816

    Aug 14, 2009

    well that was my huge surprise today when i looked at the info concerning my stock HD (new 13" MBP)

    i thought that Apple did it again but it finally comes from the HD

    why the hell would Apple cap the speed to 1.5 Gb ????

    to save some battery juice ????

    or is it an old HD with SATA instead of SATA II ???

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