Technical Reference
21
PowerLeap
™
Installation Guide
Technical Reference
This chapter presents information for calculating the system upgrade speed. It
also lists all CPU core voltage settings.
Calculating the System Upgrade Speed
You can achieve the best CPU performance by adjusting the system board’s
external clock speed according to the tables below. Or use the formula below to
calculate the CPU upgrade board’s clock multiplier.
System Upgrade Speed = External Clock Speed x
Upgrade Board Clock Multiplier
Intel CPU
External Clock
Speed
Upgrade Board
Clock Multiplier
Internal Clock Speed
Pentium - 75
50 MHz
1.5x
75 MHz
Pentium - 90
60 MHz
1.5x
90 MHz
Pentium - 100
66 MHz
1.5x
100 MHz
Pentium - 120
60 MHz
2x
120 MHz
Pentium - 133
66 MHz
2x
133 MHz
Pentium - 150
60 MHz
2.5x
150 MHz
Pentium -166
66 MHz
2.5x
166 MHz
Pentium - 200
66 MHz
3x
200 MHz
P55C MMX - 166
66 MHz
2.5x
166 MHz
P55C MMX - 200
66 MHz
3x
200 MHz
P55C MMX - 233
66 MHz
3.5x
233 MHz
