"As Smart As We Be."

CPU CPU speed Clock
doubling System bus
speed Data width SI
8086 4.77 MHz 1 4.77 MHz 16 bit 1
80286 12 MHz 1 12 MHz 16 bit 8
80386DX 25 MHz 1 25 MHz 32 bit 40
486 DX2-66 66 MHz 2 33 MHz 32 bit 142
5x86-133 133 MHz 4 33 MHz 32 bit 288
Pentium 75 75 MHz 1.5 50 MHz 64 bit 235
Pentium 90 90 MHz 1.5 60 MHz 64 bit 278
Pentium 100 100 MHz 1.5 66 MHz 64 bit 305
Pentium 133 133 MHz 2 66 MHz 64 bit 420
Pentium 166 166 MHz 2.5 66 MHz 64 bit 527
Pentium 200 200 MHz 3 66 MHz 64 bit 629