Jaton PowerPro VX, Руководство пользователя

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Chapter 3
18
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.
Usually, you do not need to enter the clock and multiplier factor unless you try to
use the “User Define” CPU speed.
Note 1For Intel Pentium CPUs, you can choose the following settings:
100 (66x1.5) 120 (60x2)
133 (66x2) 150 (60x2.5)
166 (66x2.5) 200 (66x3)
Note 2For AMD-K5 CPUs from AMD, you can choose the following P-Ratings:
PR120 (60x1.5) PR133 (66x1.5)
PR166 (66x1.75)
Note 3For Cyrix 6x86 and 6x86L CPUs, you can choose the following P-Ratings:
PR120+ (50x2) PR133+ (55x2)
PR150+ (60x2) PR166+ (66x2)
Note 4User define external clock and multiplier factor:
User Define
External Clock:
50MHz 55MHz
60MHz 66MHz
75MHz 83MHz
Multiplier Factor:
You can choose the following multiplier factors:
1.5 1.75
2.0 2.5
3.0 3.5
However, differences will exist because of the various
brands and types available.
Normally, we do not recommend that you use the
“
User Define
”
option to
setup CPU speed and multiplier factor, especially for setup of future CPUs whose
specifications are still unknown at the time of this publication. The specifications of all
present CPUs are included in the default settings. Unless you are very familiar with all
CPU parameters, it is very easy to make mistakes when you define by yourself the
external clock and the multiplier factor. However, the BIOS will reset the CPU to a safe
speed when you turn the power on second time after the main board fail to boot.