HP Vectra XU 6/XXX Optimization Manual page 17

Since the pipeline is the processor's most important means of accelerating instruction
execution, the negative impact on performance is significant.
NOTE
Which Applications are 16-bit?
All Windows for Workgroups applications are 16-bit. Many older applications, that have been
adapted for use under Windows 95, Windows NT, or OS/2, may also be 16-bit. Refer to the
manual supplied with your application software for more details.
Which Applications are 32-bit?
All applications written specifically for Windows NT, Windows 95 or OS/2 are 32-bit. Some
examples are listed below.
Windows NT/Windows 95 applications:
• MS-Office for Windows 95
• MS-Access for Windows 95
• Adobe Photoshop™ 3.0
OS/2 Applications:
• Lotus Notes
• Lotus Freelance
For the reasons explained above, HP does not
recommend using your PC to run 16-bit applications.
Best performance can only be obtained when running
32-bit applications.