Abit AR5 User Manual page 32

3-4
CPU Operating Speed:
This option sets the CPU speed. Different CPU brands use different
techniques to indicate the CPU speed. For example, AMD and Cyrix use P-
Rating.
In this field, the CPU speed is indicated like this: CPU speed (external
clock x multiplier factor)
Select the CPU speed according the type and the speed of your CPU.
¡i Note 1 ¡j For Intel Pentium CPUs, you can choose the following settings:
¡i Note 2 ¡j For AMD-K5 CPUs from AMD, you can choose the following
¡i Note 3 ¡j For Cyrix 6x86 and 6x86L CPUs, you can choose the following
¡i Note 4 ¡j User define external clock and multiplier factor:
ä 75 (50x1.5)
ä 100 (66x1.5)
ä 133 (66x2)
ä 166 (66x2.5)
P-Ratings:
ä PR75 (50x1.5)
ä PR100 (66x1.5)
ä PR133 (66x1.5)
ä PR200 (66x2)
P-Ratings:
ä P120+ (50x2)
ä P150+ (60x2)
ä P200+ (75x2)
ä User Define
/ External Clock:
ä 50MHz
ä 60MHz
ä 75MHz
/ Multiplier Factor:
You can choose the following multiplier factors:
ä 1.5
ä 2.0
ä 3.0
However, differences will exist because of the various
brands and types available.
ä 90 (60x1.5)
ä 120 (60x2)
ä 150 (60x2.5)
ä 200 (66x3)
ä PR90 (60x1.5)
ä PR120 (60x1.5)
ä PR166 (66x1.75)
äP133+ (55x2)
äP166+ (66x2)
ä 55MHz
ä 66MHz
ä 1.75
ä 2.5
ä 3.5
Chapter 3