If you have a Athlon-64 or AMD Opteron, you can now download a preview copy of Windows 64 from Microsoft, Keep in mind this is a preview edition and will expire in 360 Days.
Welcome! If you have a 64-bit ready PC, you now have the option to receive trial software for Windows XP 64-Bit Edition for 64-Bit Extended Systems via CD or download. Read below about the different options for obtaining the pre-release software, and then use the links on the right to register to order the CD Kit or download product files. Download Windows 64 Here