Operating System Support
Microsoft* Windows* Operating System Based PCs

The following desktop operating systems include optimizations for HT Technology and are currently eligible to carry the new Intel® Pentium® 4 Processor with HT Technology logo:

**Microsoft* Windows* XP Professional Edition
**Microsoft* Windows* XP Home Edition

The following operating systems are not recommended for use with Hyper-Threading Technology. If you are using one of the following operating systems, it is advised that you should disable Hyper-Threading Technology in the system BIOS Setup program

**Microsoft Windows 2000 (all versions)
**Microsoft Windows NT* 4.0
**Microsoft Windows Me
**Microsoft Windows 98
**Microsoft Windows 98 SE