Pentium Pro
Available models

Clock
Bus
L2 Cache
Max TDP
150 MHz
60 MHz
256 KB
29.2 W
166 MHz
66 MHz
512 KB
35 W
180 MHz
60 MHz
256 KB
31.7 W
200 MHz
66 MHz
256 KB
35 W
200 MHz
66 MHz
512 KB
37.9 W
200 MHz
66 MHz
1024 KB
44 W

Question: How fast was the Pentium Pro?
Answer: Pentium Pro clock speeds were 150, 166, 180 or 200 MHz with a 60 or 66 MHz external bus clock.