64 Bit?

Discussion in 'MacBook Pro' started by TSE, Aug 8, 2007.

  1. TSE macrumors 68030

    Jun 25, 2007
    St. Paul, Minnesota
    Hi, I have a MacBook 32 bit and was wondering would the new MacBook 64-bit Core 2 Duo processors run Leopard faster just because they are 64-bit? Or is the advantage of having a 64-bit processor just because it can hold more RAM?
  2. mdio1234 macrumors newbie


    Aug 8, 2007
    Yes having 64bit run leopard faster

    A core 2 duo won't just run leopard twice as fast it will run it exponentially faster, as well it allows you more memory too but only the santa rosa platforms(june 5 mbook pros) can have more than 2 gigs of ram. As for tiger the difference in speed between a core duo and a core 2 duo is completely unnoticeable, its mainly about the ram in tiger a gig is enough.
  3. Trepex macrumors 6502a


    Apr 5, 2007
    Ottawa, Canada
    That's a bit of a stretch, but a 64bit processor WILL perform better in Leopard.
  4. TSE thread starter macrumors 68030

    Jun 25, 2007
    St. Paul, Minnesota
    Alrighty, thanks!

    Can I get a second opinion?
  5. TSE thread starter macrumors 68030

    Jun 25, 2007
    St. Paul, Minnesota
  6. magius macrumors regular

    Jun 3, 2007
  7. aliquis- macrumors 6502a

    May 20, 2007

    If you need to calculate on 64 bit numbers a 64-bit CPU is faster, it (atleast AMDs) also have more registers which makes it possible for the CPU to store away data within itself instead of in RAM which is much slower, finally they may have made some other improvements aswell.

    But you also may end up with bigger memory pointers and eventually data/(instructions?) which uses up precious cache memory so in some instances it might be slower.

    Most people who game on PCs run 32-bit because 64-bit Windows doesn't work that great and there are no huge speed advantages anyway, most packages prebuilt for Solaris are 32-bit versions since noone bothers building 64-bit versions of stuff which doesn't need it or will severly benefit form it. Most people who run Linux and BSD probably stay away from 64-bit versions of their OSes aswell because flash, java, win32 codecs and similair things might not work in a 64-bit environment.

    So no, you will probably not miss out a lot.

    During WWDC 07 Steve demonstrated working with a image on a 32-bit and a 64-bit system, and the 64-bit one where much faster of course, but that was because the image where 4GB large and therefor couldn't be held in memory on the 32-bit machine so it had to use the disk a lot, no **** it becomes slower then.

    But how often do you open images or use programs which needs 4GB of ram? And in that case you need to upgrade the machine anyway.

    Edit: The real _NEED_ people will have for 64-bit machines however will most likely be because they need the ability to address more than 4GB of ram.
  8. Kawasaki macrumors member

    Aug 1, 2007
  9. aquajet macrumors 68020

    Feb 12, 2005
    This is misleading, if not completely wrong, for reasons outlined by aliquis- above.
  10. e12a macrumors 68000


    Oct 28, 2006
  11. masse macrumors 6502a


    May 4, 2007
    I'm betting leopard won't run much slower than tiger does on your current computer.

    That said, I still don't plan on switching to leopard until I purchase a macbook pro (plan on buying next summer....quad core makes me all warm and happy inside.)
  12. kwood macrumors 6502a


    Jun 26, 2006
    In the Great White North.
    Quad Cores will also make the MacBook Pro all warm inside too. Your legs will be all warm on the outside too, I have my doubts about the happy part. ;):D

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