Jaton PowerPro VX, User Manual

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System BIOS
19
Turbo Frequency:
This item will only be displayed if your CPU external clock supports Turbo
mode.
The Turbo mode allows you to speed up the external clock by approximately
2.5%. This feature is used to verify the design flexibility. It is a very important
tool for test units to verify CPU stability. Do not use this feature for normal
operation.
Disable: CPU external clock is operating within the normal
limits.
Enable: CPU external clock is operating within the limits of the
Turbo mode.
Solution in case of booting problem due to invalid clock setup:
Normally, if the CPU external clock setup is wrong, you will not be able to boot.
In this case, turn the system off than on again. The CPU will automatically use its
standard parameters to boot. You can then enter BIOS Setup again and set up the
external clock.
When you change your CPU:
The PowerPro VX main board have been designed in such a way that you can turn
the system on after having inserted the CPU in the socket without configuring any
jumpers or DIP switches. But if you change your CPU, normally, you just need to turn
off the power supply, change the CPU and then, set up the CPU parameters through
CPU
SOFT MENU
™
. However, if the CPU brand and type is the same, and if the new
CPU is slower than the old one, we offer you three methods to successfully complete
the CPU change operation.
Method 1: Setup up the CPU for the lowest speed for its brand. Turn the power
supply off and change the CPU. Then turn the system on again, and set
up the CPU parameters through CPU SOFT MENU.
Method 2: Try turning the system on a few times (3~4 times) and the system will
automatically use its standard parameters to boot. You can then enter
BIOS SETUP again and set up the new parameters.
Method 3: Since you have to open the computer case when you change the CPU,
it could be a good idea to use the CCMOS jumper to erase the
parameters of the original CPU and to enter BIOS Setup to set up CPU
parameters again.