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Leopard Under The Hood And Requirements Analysis

Discussion in 'MacRumors.com News Discussion' started by MacRumors, Oct 17, 2007.

  1. macrumors bot



    With Mac OS 10.5 "Leopard's" formal announcement, many readers have been reading through Leopard's list of over 300 new features and their associated technical requirements. With the list being quite extensive, we will attempt to analyze some of the less talked about points here.

    Under The Hood
    Leopard has seen many enhancements that many users may not be immediately aware of. AutoFS claims to multi-thread the practice of mounting and dismounting network filesystems, which should virtually eliminate the familiar spinning beach ball network users may have become familiar with. Leopard will also include various security enhancements aimed at tracking applications (including potential malware), including application signing similar to what Microsoft has done in Windows.

    System Requirements
    Leopard is the first release of the Mac OS to exclude all G3 class machines, and it also will exclude many G4 class machines as well. In order to run Leopard, a user must have a G4 (867Mhz+), any G5, or any Intel processor. Also, while most features of Leopard appear to be universal, some will require more advanced system requirements or an Intel system. Below is a comparison chart comparing Tiger's system requirements vs. Leopard's.

    Requirement : Mac OS 10.4 "Tiger" : Mac OS 10.5 "Leopard"
    Processor : G3, G4, G5, Intel : G4 (867+), G5, Intel
    RAM : 256 MB : 512 MB
    Disk Space : 3 GB : 9 GB
    Miscellaneous : Built-in Firewire required : Photobooth backdrop effects require Intel Core Duo or faster, Boot Camp requires Intel Mac, Front Row requires built-in IR, DVD Player requires 1.6 GHz processor for improved de-interlacing

    If you plan on buying Leopard at a retail store on the night of the 26th, be sure to check our new Leopard Meetup forum to meet other MacRumors members.

    Article Link
  2. macrumors 6502a


    yay for faster network drive mounts!
  3. macrumors 6502a

    So does this mean front row will refuse to run without the IR port or that it will run and just not be as functional as it could be?
  4. macrumors 65816

    A 1.6Ghz processor required for DVD Player deinterlacing? Ouch.
  5. macrumors 6502


    If only I had a car... I could be there 3 hours early. :(
  6. macrumors regular

    Well at least my new MBP won't have trouble running it :p

    Anyone have any idea how much disk space Leopard requires without all the drivers/other language support etc?
  7. j26
    macrumors 65816


    9 gigs for the OS? Boo!!!!!
  8. Editor emeritus


    I believe it to mean you don't get Front Row at all if you don't have a built-in IR port.
  9. macrumors 68020


    So no Photobooth backdrops for G4s or G5s? I somehow have a hard time believing that my G5 Quad can't handle a backdrop.
  10. macrumors 604


    I asked this before but no one answered. Apple says the 800MHz machines are too slow, so why are the 867's okay? What kind of difference does 67MHz make?
  11. macrumors regular

    9 gigs!???
  12. macrumors 6502a

    It will run, you can assign a hot key or use the new frontrow icon...
  13. macrumors 6502

    What were the 'secret' features Jobs mentioned last year? I've lost track!
  14. macrumors regular


    So does this mean it will take up 9 gigs of what i have, or will it take up 6 gigs since i wont be using tiger anymore?
  15. macrumors Penryn


    Oh so true. NFS has had too many file ghosting issues lately in 10.4.10.

    Drive space is cheap.
  16. macrumors 6502a

    !¡ V ¡!

    It states that FrontRow will "refuse" to run, not that it will "never" run. I am sure a hack and a BlueTooth remote will fix that problem or maybe a WiiMote. :D

    1.6GHz for DVD Player, so I am guessing that I can still play DVD except it will not include the advance de-interlacing feature. I am fine with that. :)

    Some of these requirements are insane when compared to Tiger. :p
  17. macrumors 68020


  18. macrumors 65816


    9 Gigs... Why is this alot?

    There are hard drives now that are 1TB large. Why is 9GB such a concern?
  19. macrumors regular


    I completely agree! I don't see how a 32 bit intel can out pace a 64 bit loaded G5 tower!? :eek:

    I hope this little chart isn't the whole truth.
  20. Moderator emeritus


    It is kind of odd, considering for instance that the 867MHz Powerbook G4 has an inferior (AFAIK) video card to the 800MHz iBook G4. Most likely it makes little or no difference, but they decided to draw a line (there are G4s in Cubes and other Macs well below 800 MHz, so it isn't like they only excluded the 800MHz iBook).

    If it makes you feel better, 99%+ chance that something like XPostFacto will let you install Leopard on an 800MHz iBook if you so desire.

    It's a tough tradeoff. Have you ever watched how Microsoft handles requirements? When XP came out, it was completely baffling whether or not it would work on a given computer unless you were told explicitly by your OEM that your model was supported. Vista likewise. So at least Apple is keeping it relatively simple.
  21. macrumors demi-god


    Unless Apple changed things Front Row will run.It's now an app in the applications folder.

  22. macrumors 65816

    Why do you say this? Do you know anything technical about the processors?

    Intel Processors use SSE, SSE2, and SSE3. Advanced instructions for multi-media. How do you know that these backdrops arent coded heavly with SSE? Thus, Making the G4/G5 unable to execute these tasks.
  23. macrumors 65816


    9 Gb is crazy, all those features use up that much more hard drive space? Yikes. I'd like to know ram usage as well, on average if it will use more or about the same.

    Either way, I can't wait to hear early reviews this should be a great upgrade!
  24. macrumors 6502a

    Jim Campbell

    Can Anyone With Hands-On Experience Confirm ...

    ... Whether the 10.4.10 Airport bug is eliminated in 10.5 ...?

    I'm most impressed with many aspects of Leopard, and I can see definite advantages to upgrading my three-Mac network at home ...

    Except that I've had to roll back two of the machines to 10.4.9 thanks to the Airport bug, and I'm not shelling out a wedge of cash for a multiple-seat license if it's going to break my wireless network.

    Any news, people?


  25. macrumors 604


    But why is it 9 gigs? What in the world did they do to the OS?:eek:

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