While the 64-bit Windows Vista installation will come with a 32-bit emulation layer called Window on Windows (WOW) which will allow you to run your old 32-bit apps on your 64-bit Vista via emulation, the 32-bit hardware drivers will not work on new Microsoft’s operating system. Opposite to that, recently previewed Mac OS X Leopard will come with 64-bit and full non-emulated 32-bit support.
Dean Pullen in his article for The Inquirer sees Leopard’s non-emulated support for 32-bit applications and drivers as a great advantage compared to 64-bit version of Windows Vista.
“Note that the non-emulated support in OSX is for applications and drivers. 32-bit programs on Vista 64 need to work on WOW emulation to run in Vista, and 32-bit drivers are a no-no. Lack of driver support is the main reason Windows XP x64 hasn’t been widely adopted, and why the Vista fudge will ensure hardware incompatibilities between the two Windows versions remain for sometime to come.
This is quite a boon for OSX, and one that should be highlighted frequently and often,” says Pullen.



AMD announced today that AMD Opteron and AMD Athlon 64 processor-based systems and AMD Turion 64 mobile technology have achieved YES Certification from Novell, further validating the company’s commitment to interoperability and customer-centric innovation.
Windows Vista Beta 2 download is now available. The download is an ISO file of Windows Vista Beta 2, which is about 3.5 gigabytes (GB) for the 32-bit edition or 4.4 GB for the 64-bit edition.
It was once uncommon to see servers running Advanced Micro Devices Inc. Opteron processors in IT shops that heavily favored the Windows operating system. But Windows managers no longer rely exclusively on machines with processors made by Intel Corp. Joan Goodchild met with Barry Crume, AMD’s Microsoft Alliance director, at the Windows Hardware Engineering Conference, for his perspective on new trends in Windows hardware, Vista and virtualization.