Results 1 to 6 of 6
  1. #1


    Member Since
    Apr 05, 2011
    Posts
    1
    Are all Mac Pro's 64 Bit?
    With news of Apple's Mac OS X Lion being 64 Bit only, and my iMac being 32 Bit, 5 years old, and how I am an iOS Dev. I want to purchase a Mac Pro from eBay. But first would like to know if every Mac Pro is 64 Bit. I want to go for a Mac Pro because I have multiple monitors and one is currently running off of USB which gets laggy, but if I would get better performance or a better performance to money ratio with a different mac (iMac, MacBook, ect.), please let me know.

    Thanks
    -Park My Car

  2. #2

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    49,135
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    I'm fairly certain they are. However, one of our Mac Pro experts should be along to answer soon enough.

  3. #3

    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    35,417
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    Yes...all Mac Pro's are 64-bit. Here's an article from back in 2006 (when the 1st gen. Mac Pro's were released)...where the title of the article actually say's it's 64-bit:

    AppleInsider | Apple unveils quad-core 64-bit Mac Pro desktops

    Thus all "newer" Mac Pro's are also 64-bit.

    HTH,

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  4. #4

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
    Posts
    22,276
    Specs:
    Imac 27" Retina 5K, 512GB flash memory, 3.3GHz, 16GB memory, macOS Sierra beta.
    A somewhat confusing question to new Mac users.

    Mac Pro first gen, 1.1, are 64 bit for sure, BUT they have a 32 bit EFI, or Boot Rom, and will run accordingly. What will happen with OS X.7 Lion's release? Maybe, and it is a pretty big maybe, the EFI will be updated to 64 bit. If you do a Google on making a 1.1 Mac Pro 64 bit there are work arounds.

    http://ahatfullofsky.comuv.com/Engli...s/SMS/SMS.html
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  5. #5

    MikeM's Avatar
    Member Since
    Oct 06, 2007
    Location
    Seattle, WA
    Posts
    201
    Specs:
    13" MBP - Mid 2012 - i7 / iPad Air / iPhone 5s / ATV3
    Quote Originally Posted by harryb2448 View Post
    A somewhat confusing question to new Mac users.

    Mac Pro first gen, 1.1, are 64 bit for sure, BUT they have a 32 bit EFI, or Boot Rom, and will run accordingly. What will happen with OS X.7 Lion's release? Maybe, and it is a pretty big maybe, the EFI will be updated to 64 bit. If you do a Google on making a 1.1 Mac Pro 64 bit there are work arounds.

    Startup Mode Selector
    Wow, reading up on this stuff, It seems to be a bit of a Charlie Foxtrot that Apple has created with the 32bit EFI situation. My gut is telling me that Apple will not cut off all the users with systems even as new as 2010 that apparently cannot (or won't) run 64bit Snow Leopard but who knows what their support model will truly be.

    Everymac.com list of systems EFI version

    -MikeM

  6. #6

    baggss's Avatar
    Member Since
    Oct 10, 2004
    Location
    Margaritaville
    Posts
    10,320
    Specs:
    3.4 Ghz i7 27 in iMac (2012), 3.4 Ghz i7 MacBook Pro (2015), iPad Pro (2014), iPhone 6+
    That link was quite helpful. There is a link in there to an App called "Startup Selector" that will tell you what your machine is running now (32 or 64) and will allow you to boot to either.

    While my Macbook will only boot in 32, my iMac WILL boot in 64 and runs quite a bit faster than it does in 32 AND utilizes RAM far more effectively for everyday use. For example, in 32 bit mode my machine used an average of 3Gb or RAM for the OS, Mail, Safari and other background Apps I always run. In 64 bit mode it's averaging a bit over 1Gb of RAM use for the same Apps.


Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Upgrading EFI from 32-bit to 64-bit on Mac Pro with 64-bit processor
    By Gemless Ear in forum OS X - Operating System
    Replies: 4
    Last Post: 04-21-2014, 12:55 AM
  2. Replies: 4
    Last Post: 01-04-2013, 12:29 PM
  3. Mac Book Pro Retina running Windows 7 64 bit
    By vigeoh in forum Running Windows (or anything else) on your Mac
    Replies: 1
    Last Post: 09-15-2012, 01:08 PM
  4. Mac pro seems a bit slow
    By Markisthejob in forum Apple Desktops
    Replies: 4
    Last Post: 06-21-2011, 04:03 PM
  5. OS 10.6: 32-bit vs. 64-bit boot up - what "Legacy" apps NEED 32-bit??
    By ticedoff8 in forum OS X - Operating System
    Replies: 3
    Last Post: 11-06-2009, 11:15 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •