Mac OS X 10.6 Snow Leopard was billed as primarily under-the-hood changes toOS X 10.5 Leopard, but information technology was much more significant than that.

OS X 10.6 Snow Leopard Snow Leopard was announced at the June 2008 Worldwide Developer Conference (WWDC) and released on August 28, 2009.

For the first time since Mac OS 8.5 was released in October 1998, Apple left behind an entire processor architecture. In 1998, it left behind Motorola 680×0 CPUs in favor of PowerPC (the first PPC Macs hawered been introduced in March 1994). With Bone 10 10.6, Apple tree left backside PowerPC CPUs in favor of Intel (the first Intel Macs were introduced in January 2006).

Snow Leopard is non impacted by the "goto fail" issues discovered in early 2014.

Big Changes with x.6

  • Snow Leopard is smaller than Leopard. Past removing PowerPC and other unnecessary legacy lawmaking, Apple tree greatly reduced the drive space needed past the operating organisation. It takes up most half as much space and thus will install well-nigh twice as quickly as Leopard. That said, it makes more than demands of your hardware, so a Mac that runs Leopard comfortably with ane GB of memory may feel very sluggish with Snow Leopard once you accept more than a couple apps running. We strongly recommend at least 2 GB of retentivity.
  • Grand Central Dispatch Thousand Central Acceleration (GCD) means that the entire operating organisation is designed to accept advantage of multiple cores, whether on i chip or more than one. Process threads, which were handled by apps in the by, are now handled by the Os with new programs designed to employ GCD. GCD will assign merely as many threads to an app equally it currently needs, which makes for better use of resource.
  • 64-bit Operation Full 64-bit support means programs will no longer be express to 4 GB of RAM; the new maximum (16 exabytes) is meaningless, as no figurer in the forseeable hereafter will be able to agree billions of gigabytes of memory. Both the Os and most all "organisation applications" (Finder, Safari, Postal service, iChat, iCal, etc.) are ready for 64-bit operation. And Snowfall Leopard is completely backwards-compatible with 32-bit apps. Starting time generation Intel Macs designed around Intel Core Solo and Cadre Duo fries do not support 64-bit performance; all Macs since and then do.
  • OpenCL OpenCL takes advantage of powerful modernistic graphic processing units (GPUs, a.k.a. "video cards") for more than displaying video. All of that processing power will also be available for general purpose calculating.
  • QuickTime X introduced a new QuickTime player and will accept full reward of Core Audio, Core Video, and Core Animation. Information technology can record audio and video using your Mac'southward built-in microphone and webcam, and it can trim and export for iPod, iPhone, Apple TV, YouTube, and MobileMe so you lot don't demand to worry about which codec to employ. QuickTime Ten supports HTTP live streaming, which tin accommodate quality on the fly based on bachelor network bandwidth. Of course it takes reward of GCD and 64-bit functioning.
  • Exchange Back up is built right into the OS. Mail, iCal, and Address Book will work with Microsoft Exchange Server 2007. This may explain why Microsoft finally brought Outlook to the Mac with Function 2010. Then long, Outlook.
  • The Finder has been completely rewritten to back up 64-bit performance and take advantage of K Central Dispatch. This makes the Finder much more than responsive.
  • For the first time, the Services bill of fare is contextual: You lot will only encounter the services available to the current app. (Until now, one-half or more of the Services might be grayed out because they don't work with your electric current program.)
  • Exposé can work in the Dock – click and concord an awarding icon and it will display that app'due south active documents in a grid. Apple tree claims this volition make it "even easier to find what you're looking for."
  • Fourth dimension Machine backups are up to 50% faster, according to Apple tree. This will exist especially helpful for that beginning, long, full fill-in.
  • Macs shut down and wake up more apace, and joining a WiFi network is also faster. This makes for more energy efficient file sharing – your sleeping Mac uses less energy and wakes more apace to serve up files.
  • If you travel with you're Mac, you'll capeesh automatic time zone settings.
  • The 'Wake on Need' characteristic may keep your Mac from staying asleep. The fix is to reset the Free energy Saver settings to their defaults, then put in your own settings.

Things Lost with 10.six

  • At that place is no support for LocalTalk/AppleTalk in Snow Leopard. Yous'll need to find another way to connect those old printers.
  • There is no longer any support for Palm OS devices in iSync. The Missing Sync (commercial software) does back up Palm devices.
  • Snow Leopard ignores creator codes when launching documents, somethingevery Mac Bone prior to 10.6 has supported – it's been office of the Mac OS since the beginning.
  • There is no write support for HFS+ volumes (floppies, hard drives, etc.)

Snow Leopard was replaced withOS Ten 10.vii Lion on July 20, 2011 after just xi months at the helm.

Concluding Supported Software

As OS X has moved forward, more and more software has dropped back up for Snowfall Leopard.

From Apple

From Other Vendors

Minimum Hardware Requirements

  • Intel-based Mac
  • 1 GB of RAM, although two GB is strongly recommended
  • 5 GB of available drive infinite
  • DVD-uniform optical drive
  • Grand Central Dispatch requires a dual-core CPU
  • 64-chip back up requires a Core 2 or newer CPU
  • OpenCL is compatible with all current Macs. It is not compatible with:
    • iMacs released before March 2009
    • Mac mini released before March 2009
    • MacBook released before Oct 2008
    • MacBook Pro released earlier June 2007
    • original MacBook Air
    • Mac Pro released before January 2008 (Jan. 2008 and later models with unsupported video cards can used the discontinued GeForce 8800 upgrade kit – Apple tree part no. MB137Z/A – for OpenCL back up. TheGeForce GT 120 retails for $149, is designed to work with the 2009 Mac Pro and has been reported to work with the 2008 model equally well.)

Further Reading

Downloadable Updates

Standalone Updates permit y'all update to a newer version of Mac OS X from your hard bulldoze instead of using Software Update, which requires an Internet connection. Download the one(s) yous demand and install them after mounting the disk image and launching the Installer program.

There are two types of Standalone Updates: Individual (or Delta) and Combo.

  • Individual Updates update one version of Mac Bone X to the next version. For example, the Mac Os X 10.6.4 Update updates Mac Bone Ten x.6.three to version x.half dozen.4. Individual Updates are also known as Delta Updates.
  • Combo Updates update the base version of a Mac OS X release to the version specified in the Combo Update, including all intermediate updates. For example, the Mac Bone 10 10.6.4 Combo Update updates any earlier version of Mac Os X 10.vi to Mac OS X 10.6.four using a single installer, as opposed to installing the individual Mac Os 10 10.6.1, 10.6.ii, 10.6.three, and 10.half-dozen.4 updates.

Standalone Updates are generally available 24 to 48 hours afterward the Update is available through Software Update.

If y'all burn a Standalone Update to CD, its disk image must be copied to your desktop or another location on your Mac Bone X startup disk in guild to be installed.

This page will be updated every bit new Standalone Updates go available.

Mac Bone 10 10.6.1

Mac Os X 10.vi.two

Mac Os X 10.vi.3

Mac OS 10 10.6.4

Mac Os Ten ten.6.5

Mac Os X 10.6.six

Version 10.6.6 introduced the Mac App Store.

Mac OS X x.6.seven

Mac OS X ten.6.8

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