Theoretically, 64-bit computing system has advantages and will yield improved performance, other than allows Windows Vista to take advantage of more than 4GB of RAM memory. This hassle and cost to run 64-bit Windows Vista must have a lot of people to think carefully before deciding whether to upgrade and migrate to 64-bit system. Photoshop CS4 supports 64 bit and has its own launch icon on the unit. I just bought an M6500 from Dell and it has Extreme Quad Core (8 CPU's, running on 16 gigs of RAM, not 2 gigs). To get the 64-bit DVD-ROM media, users need to follow instructions (no longer valid) to order a 32-bit CD-ROM or 64-bit DVD-ROM directly from Microsoft for a minimal fee, including shipping and handling charges. 32 Bit vs 64 Bit Not sure what you will be doing with 64 bit until software becomes available for it. Only Vista Ultimate retail box contains both the 32-bit DVD-ROM and 64-bit DVD-ROM.

In fact, for Vista Basic, Business, and Home Premium, only the 32-bit DVD-ROM is included. Question: Q: MacBook A1181 32 OR 64 BIT What is the latest OSX which can be installed on a MacBook A1181 I have ordered OSX 10.6 Snow Leopard as seems an essential first step. For users who purchased a branded computer from OEMs such as HP, Dell, Lenovo, Acer and etc, 32-bit Windows Vista is installed and supplied. X64 64-bit microprocessor architecture CPU is backward compatible with x86 (32-bit) architecture (that’s why 圆4 is sometimes also referred as x86-64), thus a 圆4 CPU can runs both 32-bit or 64-bit of Windows Vista.

Similarly, CPU that are '32-bit' also have parts that are 128 bits (or more) wide.With more and more desktop computers and notebooks now equipped with 64-bit microprocessors and 圆4 CPUs from Intel and AMD such as AMD Opteron, AMD Turion 64/64 X2, AMD Sempron, Intel Pentium D/Extreme Edition and Intel Core 2 Duo, it’s naturally for Windows Vista users to ponder if they should go for 32-bit or 64-bit edition of Windows Vista, as unlike Windows XP, both different architecture versions have already been released to the market. 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 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.

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.

White macbook 32 or 64 bit