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DOWNLOAD MAC OS X 10.6 SNOW LEOPARD 64 BIT UPGRADE
DOWNLOAD MAC OS X 10.6 SNOW LEOPARD 64 BIT PRO

However, according to Thom Holwerda of OSNews, most Macs will boot in 32-bit mode by default – at least that’s the case with the latest developer release (build 10A432).Īlthough this could change in the final release, at present the 20 Xserves are the only Mac that will automatically boot into 64-bit mode. Snow Leopard is completely backwards-compatible with 32-bit apps.įirst generation Intel Macs designed around Intel Core Solo and Core Duo chips do not support 64-bit operation all Macs since then do. Both the OS and almost all “system applications” (Finder, Safari, Mail, iChat, iCal, etc.) that come with Snow Leopard are ready for 64-bit operation.

DOWNLOAD MAC OS X 10.6 SNOW LEOPARD 64 BIT PRO

The GeForce GT 120 retails for $149, is designed to work with the 2009 Mac Pro and has been reported to work with the 2008 model as well.)įull 64-bit support means programs will no longer be limited to 4 GB of RAM the new maximum (16 exabytes) is meaningless, as no computer in the foreseeable future will be able to hold billions of gigabytes of memory.

DOWNLOAD MAC OS X 10.6 SNOW LEOPARD 64 BIT UPGRADE

2008 and later models with unsupported video cards can used the discontinued GeForce 8800 upgrade kit – Apple part no.

Mac Pro released before January 2008 (Jan.

Of the three hardware-dependent features, it has the highest requirements and is not supported on the most Intel Macs: OpenCL makes the power of modern GPUs available for non-graphics computation. What Grand Central Dispatch does for multithreading, OpenCL does for accessing the power of the graphics processing unit (GPU) in more recent Intel Macs. Fortunately gaining GCD support simply requires replacing the Core Solo CPU with a Core Duo or Core 2 Duo one. The only Intel Mac to ship without a multicore CPU was the 1.5 GHz Mac mini Core Solo, which we’ve warned our readers about since the beginning. This should lead to better utilization of CPU resources.Īny Intel Mac with a multicore CPU will be able to use GCD. New apps can hand off that responsibility to the OS, which will dynamically allocate threads as necessary. Under previous versions of OS X, each application was responsible for its own multithreading support. Grand Central Dispatch lets the operating system oversee the handling of threads in GCD-aware apps. Apple has been promoting three key advantages of Mac OS X 10.6 Snow Leopard that are hardware dependent: