Click on the Apple menu and then choose About This Mac.To determine if you have a 64-bit capable processor: First, is the processor 64-bit capable? Second, is the OS running in 32-bit or 64-bit mode?
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There are two things to know about a Mac in the context of determing if the OS is 64-bit.
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How to determine if your Operating System is 32-bit or 64-bit Operating Systems Quick Fact - A 64-bit plugin can only run in a 64-bit host program.Īlthough this fact is always true, some 64-bit hosts allow for a "bridge" program enabling the abilty to run a 32-bit plugin in a 64-bit host.įor any potential information on "bridge" programs that may work in the host of your choice, refer to the host program documentation or support. Quick Fact - A 64-bit operating system will allow for both 32-bit and 64-bit programs to be installed.Īlthough both 32-bit and 64-bit programs can be installed on a 64-bit operating system, a 32-bit program will only be able to access up to about the first 4 gigabytes of memory (RAM).īy contrast, a native 64-bit program installed on a 64-bit operating system will be able to utilize a much higher amount of memory (RAM), allowing for much larger projects and more memory-intensive operations.
See your specific operating system specifications for further information on how much memory (RAM) can be utilized by your specific OS. A 64-bit operating system allows for much higher RAM access and capacity.
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Therefore, it makes sense to only install 32-bit programs on a 32-bit operating system, as a 64-bit program would not be able to access any more RAM than a 32-bit program on a 32-bit operating system. A 32-bit operating system typically only allows for up to about 4 gigabytes of RAM to be utilized by the OS or any of the installed programs.The terms 32-bit and 64-bit refer to how much of your computer's memory (RAM) can be used by the installed operating system and the applications that run within that operating system.
64-bit Quick Facts Quick Fact - There are 32-bit and 64-bit Operating Systems as well as 32-bit and 64-bit Programs.