![]() Similarly, CPU that are "32-bit" also have parts that are 128 bits (or more) wide. ![]() Of more than 4 GB of memory by a single executable program-no more, noīeginning with version 10.4, Mac OS X supports command-line 64-bitĮxecutables on G5-based Macintosh computers and 64-bit-capable Intelīeginning with version 10.5, Mac OS X supports full-featured 64-bitĪpplications on G5-based and 64-bit-capable Intel Macintosh computers.īeginning with Snow Leopard, Mac OS X uses a 64-bit kernel on someĪlso - CPU that are "64-bit" still have parts that are only 32 bits wide. ![]() Support for a 64-bit address space-that is, support for concurrent use What Is 64-Bit Computing?įor the purposes of this document, 64-bit computing is defined as Then type in command prompt in the search bar and select the command. You can have 32 bit code run on a 64 bit CPU.Ī nice overview of this subject is at Apple's 64-bit Transition Guide Keep in mind, this transition was started before Tiger was released on Apand is effectively complete. A Media Access Control (MAC) address is the unique hardware identifier of a NIC. As you may have seen from all the answers - macs are different than other Operating Systems (OS) in that the 32 bit and 64 bit dividing line is all blurry.
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