![]() Windows 7, is be available both in 32-bit and 64-bit editions. Recent versions of Mac OS X, including Mac OS X 10.7 Lion and Mac OS X 10.6 Snow Leopard, are fully 64-bit capable (and automatically run as a 64-bit operating system if your Mac supports it). Mac OS X 10.5 Leopard is 64-bit capable, but few 64-bit applications are currently available for Leopard. The most commonly available 64-bit capable processor is the Intel Core 2 Duo series of processors (the Intel Core Duo series is not 64-bit capable).Īll Microsoft Windows operating systems since Windows XP Professional, including Windows Vista and 7, are available as 64-bit versions. To run 64-bit applications, you must run a 64-bit operating system, and you must have a 64-bit capable processor. ![]() 64-bit operating systems and applications can address an effectively unlimited amount of RAM (the theoretical limit is 16.8 million terabytes!). 32-bit applications can address up to around 3GB RAM. Most currently available applications and operating systems are 32-bit. This provides benefits for certain kinds of memory-intensive applications, such as graphics editing programs (where very large, high-resolution pictures need to be held in memory) and audio applications (where very large, high-quality sound samples need to be held in memory). Sibelius and 64-bit What is 64-bit computing?Ħ4-bit computing makes it possible for applications to address much larger amounts of memory (RAM) than previous applications.
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