Rev C has GPU x6 then why not a firmware update to x6 for rev B?

Discussion in 'MacBook Air' started by nph, Jun 14, 2009.

  1. nph macrumors 6502a

    Feb 9, 2005
    If rev C runs the GPU at a higher speed and hw otherwise is the same as rev B then why couldn't Apple release a firmware update to let rev BGPU rum faster as well?
  2. 11800506 macrumors 65816


    Oct 31, 2007
    Washington D.C. Area
    Well the hardware likely isn't exactly the same so the new Air could be cool enough to be able to support a faster GPU and also, it allows Apple to use it as an incentive or extra feature to upgrade to the Rev C.
  3. sparkie7 macrumors 68010


    Oct 17, 2008
  4. mhnajjar macrumors 6502a


    Mar 3, 2008
    This is NOT a revC since it just has a speed increase for a cheaper price. Otherwise, it has the same hardware.

    If it is really 6x, then there would be a firmware sometime.
  5. h1d macrumors regular

    Nov 30, 2008
    Just like no 4 finger swipe on rev A (though this could be hacked)
  6. aristobrat macrumors G5

    Oct 14, 2005
    Every other Mac product counts speed bumps as revs, no?
  7. Halon X macrumors regular

    Sep 22, 2005
    Malibu, CA
    My personal opinion, speed bumps are minor changes, not revisions. I look at it the same as an auto manufacture making minor tweaks and changes to a car in between major revisions.

    The changes are not really drastic enough to warrant a new revision where as changes to the 15" MBP for example are with the addition of an SD card slot and internal battery.
  8. lekun macrumors regular

    Jan 5, 2006
    The 6X increase is compared to the Rev A. I don't know if the Rev B was 6X faster than the Rev A, but it had to be close to that. The GPU speed between the Rev B and the Rev C isn't 6X–its much smaller if anything at all.
  9. dudeitsjay macrumors regular

    Mar 26, 2009
    Rev B was compared to the Rev A as 4x.
    Rev C was compared to the Rev A as 6.1x
    The Rev B 1.8 was compared to the Rev A, and the Rev C 2.13 was compared to the Rev A.

    The difference in terms of obvious hardware changes is the added heatsink/shield attached to the underbody (man i've been referencing this so many times already lol)...
  10. nph thread starter macrumors 6502a

    Feb 9, 2005
    Could that extra heatsink make the difference so the extra heat wouldn't be an issue?
  11. NC MacGuy macrumors 603

    NC MacGuy

    Feb 9, 2005
    The good side of the grass.
    If you read the Snow Leopard thread from WWDC one of the features is supposedly allowing expanded multi-touch to crippled but capable laptops.

    Are there any pictures of the new Rev. MBA's guts? I love studying those heat sink designs.
  12. aleksandra. macrumors 6502a

    Sep 13, 2008
    Warsaw, Poland
    This was a driver issue IIRC, much easier to fix.

    Is a "firmware update" a new magic formula for any problem? ;)
  13. Chundles macrumors G4


    Jul 4, 2005
    Aren't the new processors Super Mega Ultra Low Voltage or whatever?

    Maybe they're cool enough that Apple could ramp up the graphics within the same thermal envelope?
  14. nph thread starter macrumors 6502a

    Feb 9, 2005
    Isn't a 'firmware' fix the salvation for everything??? :D

    seriously, this makes me think that maybe re-applying the thermal paste might not be a bad idea if they do allow the GPU to run at full speed.
    To my understanding it is only slightly reduced in speed and that was primarily for Rev A so I hope rev B is even less so that any update would have minimal heat impact.

    Don't know, maybe I am too much of an optimist and dreaming here...?
  15. Tallest Skil macrumors P6

    Tallest Skil

    Aug 13, 2006
    1 Geostationary Tower Plaza
    But a name change... noooo... THAT'S not a revision... :rolleyes::D

    "Revision" is different for laptops than desktops.

    Actually, no, you know what? It's the same.

    New cases restart the revision cycle, with processor updates being the revisions themselves.

    For example, the G5 iMac had three revisions: the first, the ambient light sensor, and the iSight; each time getting a processor update.
  16. mrossi macrumors newbie

    Jan 21, 2009
    We were discussing the same topic in an previous thread:

    It seems as though the internals haven't seen any real change (and infact probably produce more heat that their counterparts due to highger clocks) but the "extra" heat sink / shield seems to be the major addition which allows for these higher speeds.

    me 2 :)
  17. aaquib macrumors 65816


    Sep 11, 2007
    Toronto, Canada
    Snow Leopard has 4 finger gesture support for all prior MacBook and MacBook Air's that don't support it.
  18. aleksandra. macrumors 6502a

    Sep 13, 2008
    Warsaw, Poland
    Revision A used Intel's graphics. There was no need to underclock that. If you have a way of reading GPU temperature in Air under OS X you should probably start from there and see if it can take more.
  19. fteoath64 macrumors regular


    Nov 16, 2008
    It is Apple by design principle!. For Rev C, they can afford to program the EFI for 6X GPU now that they have figured that the casing can take the heat without adversely affecting the reliability of the machine. This gives a slight speed bump, and some incentive for users to upgrade or buy the new model straight out.

    Will they do that for Rev B ?. Unlikely. Since when did Apple give you a new feature for free ?.:mad:

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