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  1. #31
    New Powerbooks and Powermacs after all?
    Murlyn's Avatar
    Member Since
    Jun 11, 2003
    Location
    Mount Vernon, WA
    Posts
    4,915
    Specs:
    MacBook Pro 2.6 GHz Core 2 Duo 4GB RAM OS 10.5.2
    I sure hope so, now that would be smooth

  2. #32
    New Powerbooks and Powermacs after all?
    iaminvincible's Avatar
    Member Since
    May 12, 2004
    Location
    Atlanta, GA
    Posts
    81
    Specs:
    15" MacBook Pro, 2.16Ghz, 1GB ram
    Quote Originally Posted by Murlyn
    I sure hope so, now that would be smooth

    This is one of the places I read it at:
    http://news.com.com/Apple+planning+a...html?tag=st_lh
    An apple a day keeps the doctor away...

  3. #33
    New Powerbooks and Powermacs after all?
    Meyvn's Avatar
    Member Since
    Nov 24, 2004
    Posts
    726
    Specs:
    Black Colorware PowerBook 1.67 GHz G4, 2 GB DDR2, 100GB 7200 RPM
    As long as there's no FrontRow and it doesn't cost extra battery power, sounds great. I had an old Vaio with a built-in camera about five or six years ago, and that was really cool, but I never used it. I guess I'll just need to get some friends with webcams.
    'cause when it rains, you know it pours.

  4. #34
    ghostrida
    Guest
    to me it would seem that in order to maintain the price range of the current DP PowerMacs, Apple would have to release single dual-core chip PowerMacs in addition to the double dual-core (quad) setup. Otherwise they would totally lose the current price range market. There is no way a dual core is equivalant to a single core in price, we are talking about new chips here right?

  5. #35
    New Powerbooks and Powermacs after all?
    lonerider's Avatar
    Member Since
    Feb 24, 2005
    Posts
    150
    Specs:
    iBook G4 1.2 1.25Gig RAM Emac 1.42Ghz 1GB RAM
    Quote Originally Posted by ghostrida
    to me it would seem that in order to maintain the price range of the current DP PowerMacs, Apple would have to release single dual-core chip PowerMacs in addition to the double dual-core (quad) setup. Otherwise they would totally lose the current price range market. There is no way a dual core is equivalant to a single core in price, we are talking about new chips here right?

    I basically agree with this, and I suspect we are in for a letdown.

    As I posted earlier, a dual processor system is generally faster than a single dual core box.

    The biggest letdown I can see is having the two lower end powermacs replaced with single dual core chips. That would have nothing to do with improving performance but rather nudinging Apple's margins higher. Even if they had pci-e, we're not talking about improving performance much. Sadly, they will probably dupe a lot of people into thinking a single dual core box is better than a dual single core box.

    At the price points they are selling powermacs at, I would really expect to see a dual 2.3ghz single core at the bottom, dual 2.7ghz in the middle, and perhaps a dual-dual core 2.5ghz box. All of them should be updated to pci-e with the possible exception of the bottom line dual 2.3.

    But my sinking suspicion is that they are going to stick us with single dual core boxes, which would really suck.

  6. #36
    New Powerbooks and Powermacs after all?

    Member Since
    Apr 11, 2005
    Location
    Cleveland Ohio
    Posts
    398
    Specs:
    Dual G5 powermac
    cmon ditching x86 :mac:
    new vid 8/8/05

  7. #37
    New Powerbooks and Powermacs after all?

    Member Since
    Mar 30, 2004
    Location
    USA
    Posts
    4,744
    Specs:
    12" Apple PowerBook G4 (1.5GHz)
    Quote Originally Posted by lonerider
    That's not really true - depends on what you're doing.

    Two individual CPUs have two paths to memory. A dual core chip means each individual core has to share the same bus to memory.
    ...
    It really does depend on what you're doing. The G5 and Opteron are very different in this regard. Apple's G5 systems have both CPUs connected to a system controller, which in turn connects to memory. With the Opteron, each single-core CPU has its own memory controller.

    Since the G5 doesn't have a memory controller, and the link to memory through the system controller is slow (compared to the G5's bus speed) the two chips share their caches. With single-core G5s, this cache-sharing takes place over the frontside bus (which runs at half the CPU speed.) With a dual-core G5, both chips can access each other's cache at full speed. Whether this will make a noticeable difference is anyone's guess.

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