Technical Reference
23
PowerLeap
™
Installation Guide
Cyrix/IBM CPU
External Clock
Speed
Upgrade Board
Clock Multiplier
Internal Clock Speed
6x86 - P120+
50 MHz
2x
100 MHz
6x86 - P133+
55 MHz
2x
110 MHz
6x86 - P150+
60 MHz
2x
120 MHz
6x86 - P166+
66 MHz
2x
133 MHz
6x86 - P200+
75 MHz
2x
150 MHz
6x86L - P120+
50 MHz
2x
100 MHz
6x86L - P133+
55 MHz
2x
110 MHz
6x86L - P150+
60 MHz
2x
120 MHz
6x86L - P166+
66 MHz
2x
133 MHz
6x86L - P200+
75 MHz
2x
150 MHz
6x86MX - PR166
60 MHz
2.5x
150 MHz
6x86MX - PR200
66 MHz
2.5x
166 MHz
6x86MX - PR200
75 MHz
2.5x
150 MHz
6x86MX - PR233
66 MHz
2 x
200 MHz
6x86MX - PR233
75 MHz
3x
188 MHz
6x86MX - PR266
83 MHz
2.5x
207 MHz
MII-300GP
66 MHz
3.5x
233 MHz
MII-333GP
75 MHz
3.5x
263 MHz
For systems with an external clock speed slower than 50MHz, there may
be a slight performance sacrifice for your new CPU. For
example, changing to a K6-166 from a Pentium-75 will result
in a system upgrade speed of 150MHz (not 166MHz).