Asus Rampage III Extreme - Manual (Page 32)

Onboard LEDs
The motherboard comes with a set of LEDs that indicate the voltage conditions of CPU,
memory, northbridge and southbridge. You may adjust the voltages in BIOS. There are
also an LED for hard disk drive activity and an onboard switch for power status. For
more information about voltage adjustment, refer to
3.3 Extreme Tweaker menu.
1. CPU LED
The CPU LED has three voltage displays: CPU Voltage, CPU PLL, and IMC
Voltage; you can select the voltage to display in BIOS. Refer to the illustration
below for the location of the CPU LED and the table below for LED definition.
2. Memory LED
Refer to the illustration below for the location of the memory LED and the
table below for LED definition.
3. Northbridge/Southbridge LEDs
Northbridge and southbridge LEDs each have two different voltage displays.
The northbridge LED displays either the 1.25V NB voltage or the 1.20V
FSB termination voltage. The southbridge LED shows either the 1.50V CPU
PLL voltage or the 1.05V SB voltage. You can select the voltage to display
in BIOS. Refer to the illustration below for the location of the northbridge/
southbridge LEDs and the table below for LED definition.
Normal (green) High (yellow) Crazy (red)
CPU Voltage (default) 0.85–1.5 1.50625–1.59375 1.6–
CPU PLL 1.81592–1.89542 1.90867–1.94842 1.96167–
QPI/DRAM 1.2–1.39375 1.4–1.65625 1.66250–
2-2 Chapter 2: Hardware information