Asus P5E3 WS PRO User Manual page 23

Precision Tweaker
This feature allows you to fine tune the CPU/memory voltage and gradually
increase the memory Front Side Bus (FSB) and PCI Express frequency at 1MHz
increment to achieve maximum system performance. See page 4-17 to 4-21 for
details.
C.P.R. (CPU Parameter Recall)
The C.P.R. feature of the motherboard BIOS allows automatic re-setting to the
BIOS default settings in case the system hangs due to overclocking. When the
system hangs due to overclocking, C.P.R. eliminates the need to open the system
chassis and clear the RTC data. Simply shut down and reboot the system, and the
BIOS automatically restores the CPU default setting for each parameter.
Due to the chipset behavior, AC power off is required before using C.P.R.
function.
ASUS P5E3 WS Professional 1-7