IBM has given us a 3ghz PM

Discussion in 'Buying Tips and Advice' started by zap2, Oct 19, 2005.

  1. zap2 macrumors 604

    zap2

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    #1
    well from what i have read the new quad PM is not liquid cooler so it it not over clocked so likely it COULD be over clocked to 3ghz cuz a 2.3ghz went to 2.7ghz over clock so a 2.5ghz could also get over clocked to 3ghz


    So perhaps IBM gave us our 3ghz PM a little late and it will have to be over clocker to get there but could apple to it??
     
  2. Phat_Pat macrumors 68000

    Phat_Pat

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  3. Bear macrumors G3

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    #3
    Why do people insist that Apple overclocks the processors they put in their systems?

    Apple does not use any processor at faster than its rated clock speed.

    The 970MP is only available up to 2.5GHz currently.
     
  4. ksz macrumors 68000

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    San Jose, CA
    #4
    Look at it this way: a dual core 2.3 GHz might be as fast as a 3 GHz PPC when running multithreaded apps or running multiple apps.

    A dual core 2.5 GHz would certainly be faster in real-world stuff compared to a single core 3 GHz.
     
  5. zap2 thread starter macrumors 604

    zap2

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    #5
    i was under the impression tha PM 2.5 and 2.7 were older clocked 2.3s? was i misinformed? i thought that was why PM updates were so tiny from 2.5 to 2.7
     
  6. Nermal Moderator

    Nermal

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    #6
    I remember when the 1.42 GHz G4s came out. The fastest listed on Motorola's site was 1.25 GHz, so people automatically assumed that Apple was overclocking.

    In reality, Apple was getting all of the 1.42 GHz units from Motorola. They weren't available to anyone else, so Motorola didn't list them on their site. Why promote something you're not selling?
     
  7. Bear macrumors G3

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    #7
    Nope, they weren't overclocked. Sometimes you hit a speed barrier in a chip design and you get small incrmemental speed increases.
     
  8. gekko513 macrumors 603

    gekko513

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    Oct 16, 2003
    #8
    My understanding is that the PM 2.7 used chips that were rated for 2.3GHz when air cooled and 2.7GHz when liquid cooled. So if I'm right, then you're right about them being the same chips, but they're not overclocked because they're actually rated for that frequency with the right cooling system.

    This does indeed give some hope for a higher clocked liquid cooled PM Quad, but I wouldn't get my hopes up too high. Maybe these chips with a larger surface area don't benefit as much from a liquid cooling solution as the previous tiny ones. If they could clock it higher with liquid cooling, then "Why aren't they already doing it?" is a question that springs to mind. :confused:
     

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