overclocking the iMac

Discussion in 'iMac' started by carlosbutler, Jun 15, 2008.

  1. carlosbutler macrumors 6502a

    carlosbutler

    Joined:
    Feb 24, 2008
    Location:
    London City
    #1
    i am planning to get my first iMac soon. i thought of just going all out and getting the highest end model, ie 24" 3.06Ghz and 4gb(not apple ram)...
    but i read somewhere on this forum that the 2.8 and the 3.06 is the same, except just overclocked. so i was wondering if it is at all possible to overclock, and if that statement is true or not. also is it worth paying an extra £112.80 (at educational discount price) to get a CPU that is 260Mhz faster. considering that at the moment one of the PC's i use had 2.6 dual core 64bit cpu, and i think that is plenty fast, even for heavy gaming since i will go for the nVidia 8800 which ever model i go for
     
  2. bob vansteel macrumors regular

    Joined:
    Jun 13, 2008
    #2
    they aren't overclocked to 3.06 or 2.8....actually they are underclocked. The penryn chip actually tops out at 3.2, but apple underclocked it to 3.06,2.8, and i think the 2.6 and 2.4 models too...so i think they can be overclocked, but probably only in windows(bootcamp), not exactly sure about in osx.
     
  3. rfruth macrumors regular

    rfruth

    Joined:
    Feb 5, 2007
    Location:
    Texas
  4. Muncher macrumors 65816

    Muncher

    Joined:
    Apr 19, 2007
    Location:
    California
    #4
    If you want to get technical, ALL chips are underclocked, except the top of the top of the line chips. They make all the chip the same way, then test them and sort them into bins. The chips that pass are clocked at higher speeds and sold at a premium.

    EDIT: Cpu overclocking, I believe, is a hardware feature; if Apple didn't build it in, it's not possible. Gpu overclocking can be done, albeit in windows only.
     
  5. neonblue2 macrumors 6502a

    Joined:
    Aug 25, 2006
    Location:
    Port Pirie, South Australia
    #5
    They're not running Penryns.

    http://www.macrumors.com/2008/04/28/apple-releases-new-imacs/
     
  6. trainguy77 macrumors 68040

    Joined:
    Nov 13, 2003
    #6
  7. Muncher macrumors 65816

    Muncher

    Joined:
    Apr 19, 2007
    Location:
    California
    #7
  8. trainguy77 macrumors 68040

    Joined:
    Nov 13, 2003
    #8
    Depends which of the two you use. But yes that is true.
     
  9. bob vansteel macrumors regular

    Joined:
    Jun 13, 2008
    #9
    yes they are....penryns are also called intel extreme chips...and santa-rosa is just the platform of the chip(i.e. centrino,core 2 duo,etc.) however the penryn has all the benifits of the next gen montiva platform, notably its large FSB.
     

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