One of the common choices today is whether to run a 32-bit or 64-bit operating system on desktop machines. Since 32-bit operating systems have been in production for many years, 32-bit still seems ...

64-bit computing is replacing 32-bit, mainly because 64-bit enables faster hardware and software. Here's the rundown on the ongoing 32-bit vs. 64-bit debate.

Why do that? Because 32-bit OSes are still out there for some. Those systems need 32-bit software—they typically can't even install a 64-bit program, and certainly won't run them. However, a 64 ...

Your new computer has a 64-bit processor, but your software probably is still 32-bit. Why haven't software developers done more about it?

One of the more common questions I hear about Vista is which bit version of Windows Vista should one get. Do we go with x86 32 bit edition or x64 64 bit edition?

For now, a crisis seems to have been averted. But for how long? At what point will it be acceptable to finally remove the ability to natively run 32-bit software from modern operating systems?

With 32-bit support cut out, Apple will be able to rip out any remaining 32-bit code in iOS, as well as 32-bit software libraries and things that allow 32-bit apps to run within 64-bit iOS.

No. 64-bit Windows will not run on 32-bit architecture, and, in fact, you can't even install it. That said, you can install and run 32-bit Windows on any hardware, both 32-bit and 64-bit.

For most would-be Windows 7 users, a 64-bit version of Windows 7 is the right move. But if you don’t have sufficient RAM (at least 4GB), or you rely on devices that don’t have supporting 64 ...

Dubbed Windows XP 64-Bit Edition for 64-Bit Extended Systems, the operating system will run on PCs with the Athlon 64 chip and also workstations using AMD's Opteron chip, Microsoft said.