AMD Athlon 1100
A regular AMD Athlon 'Thunderbird' running at 1100MHz using a 100MHz FSB. AMD also made Athlon's up to 1400MHz that still used the 100MHz FSB to be able to offer CPU's that could run on older motherboards that didn't support a 133MHz (DDR266) FSB. However, at these higher speeds the 133MHz FSB version would've been favorable since it has a faster I/O throughput and memory access.