22
Technical Reference
PowerLeap
™
Installation Guide
Cyrix/IBM CPU
External Clock
Speed
Upgrade Adapter
Clock Multiplier
Internal Clock Speed
6x86MX - PR233
66 MHz
3x
200 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 of less than 66MHz
(50MHz or 60MHz), there may be a slight performance
sacrifice for your new CPU. For example, changing to a
K6-III 400 from a Pentium-75 will result in a system upgrade
speed of 300MHz (not 400MHz). In this case, you can get
improved performance by adjusting the external clock speed
to 66MHz.
SW1: Core Voltage Settings
Core Voltage
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
3.5V ON ON ON ON OFF
3.4V OFF ON ON ON OFF
3.3V
ON OFF ON ON OFF
3.2V OFF
OFF
ON
ON
OFF
3.1V
ON ON OFF ON OFF
3.0V OFF ON OFF ON OFF
2.9V
ON OFF OFF ON OFF
2.8V OFF OFF OFF ON OFF
2.7V ON
ON
ON
OFF
OFF
2.6V OFF ON ON OFF OFF
