Pentium Dual Core

Discussion in 'General Mac Discussion' started by daveL, Apr 9, 2005.

  1. daveL macrumors 68020

    daveL

    Joined:
    Jun 18, 2003
    Location:
    Montana
    #1
    I saw this little ditty on hardmac and thought it would be of interest:

    http://hardmac.com/niouzcontenu.php?date=2005-04-05#3865

    As I have expected, due to the speed with which Intel was getting its first dual core processor out the door, it ain't pretty. Each core has to go out to the motherboard bus to communicate with each other. What's with that? They're only getting a 55% performance boost!

    Both AMD and IBM dual core offerings are expected to spank the Intel kludge, since both will provide on-chip buses between cores. In other words, they're doing it right.
     
  2. quagmire macrumors 603

    quagmire

    Joined:
    Apr 19, 2004
    #2
    Just a note on all the dual core chips, IBM is the only company that is making their dual core chips faster. Intel is going from 3.8 Ghz to 3.2 Ghz and AMD is going from like 2.6 Ghz to 2.2 Ghz or around there. While the PPC 970MP is going to be around 3 Ghz from 2.5 Ghz.
     
  3. daveL thread starter macrumors 68020

    daveL

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    Jun 18, 2003
    Location:
    Montana
    #3
    And this information (IBM) comes from ... ?
     
  4. quagmire macrumors 603

    quagmire

    Joined:
    Apr 19, 2004
    #4
    I got the intel info from here.

    http://www.hexus.net/content/reviews/review.php?dXJsX3Jldmlld19JRD0xMDg1

    I heard the AMD reports awhile ago, but too lazy to go fish it up.

    If you been following the Thinksecret PPC reports about the 970MP/GX they said it will be clocked around 3 Ghz.
     
  5. RacerX macrumors 65832

    Joined:
    Aug 2, 2004
    #5
    I'm not sure why people are acting like IBM is trying to catch up on this area. They have had a dual core processor on the market since late 2000, the POWER4.

    The original design of the PowerPC 970 was to be based on a single core of the POWER4 processor with both 32-bit and 64-bit compatibility to provide IBM's workstation clients using PowerPC 604e, POWER3 and POWER3-II based systems a way to migrate to the 64-bit POWER4 (and later POWER4+ and POWER5).

    The only thing IBM did to bring the PowerPC 970 in line with what Apple wanted was to add Altivec (a Motorola based technology).

    IBM is re-implementing dual core on a single core processor based originally on an existing dual core processor. This isn't there first dual core processor to market... just the first that Apple is planning on using.
     
  6. daveL thread starter macrumors 68020

    daveL

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    #6
    TS said Tiger would be announced on April 1st, as well. Just because some specs shows up on a rumor sight, doesn't mean you should go around asserting them as facts.
     
  7. Sun Baked macrumors G5

    Sun Baked

    Joined:
    May 19, 2002
    #7
    And if you go with "actual" IBM public releases -- they stated that dual cores would likely need to be introduced at reduced clock speed to fit within the current heat/power specifications.

    Replacing a single core 2.5GHz chip with a dual core 2.0GHz chip is a big performance bump.

    But it all depends on how much they can reduce the heat/power in the next generation -- don't go by initial reports, especially since we were getting reports that 7455s up to 1.8GHz were coming off the assembly line before those ever shipped and the reality of what we got was still rather ugly.
     
  8. Catfish_Man macrumors 68030

    Catfish_Man

    Joined:
    Sep 13, 2001
    Location:
    Portland, OR
    #8
    iirc power levels for the 970fx are such that a dual core 2GHz processor could be feasible. Since IBM is introing some new tech ("dual stress liner" iirc, there were a few articles about it) that they claim gets them a 24% frequency boost at the same wattage, then it seems possible that they could intro the dual core G5 at ~2.5GHz. I'm not expecting higher than that though, unless Apple decides to go with liquid nitrogen ;)
     
  9. daveL thread starter macrumors 68020

    daveL

    Joined:
    Jun 18, 2003
    Location:
    Montana
    #9
    Hey, the water cooling in my dual G5 isn't refrigerated, so there's still room for improvement. :)

    Seriously though, I can't see the 970 dual core running at a higher clock than we already have.
     

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