Intel Pentium III 1100
The Pentium III 1100 is the fastest Pentium III 'Coppermine' that uses a 100MHz FSB. Faster models (1133MHz, and the later Tualatin CPU's) use the faster 133MHz bus. In some situations (for instance when playing games) the 133MHz makes a difference. I guess the 1100MHz didn't sell much and people that bought faster Pentium III's (933MHz+ models) usually went for a system with a 133MHz FSB. Even in OEM-channels .