6 hardware monitor, Opt_temp1/2/3 overheat protection [disabled, Scroll down to see more items – Asus Maximus Extreme User Manual
Page 110: 32 chapter 4: bios setup

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Chapter 4: BIOS setup
4.6.6
Hardware Monitor
v02.58 (C)Copyright 1985-2006, American Megatrends, Inc.
Select Screen
Select Item
+- Change Field
F1 General Help
F10 Save and Exit
ESC Exit
Hardware Monitor
CPU Temperature
[38.5ºC/102ºF]
MB Temperature
[36ºC/96.5ºF]
NB Temperature
[35ºC/95ºF]
SB Temperature
[43ºC/109ºF]
OPT1 Temperature
[N/A]
OPT2 Temperature
[N/A]
OPT3 Temperature
[N/A]
COP EX
NB Overheat Protection
[Disabled]
SB Overheat Protection
[Disabled]
OPT_TEMP1 Overheat Protection [Disabled]
OPT_TEMP2 Overheat Protection [Disabled]
OPT_TEMP3 Overheat Protection [Disabled]
CPU Fan and Chassis Fan
OPT Q-Fan and Power Fan
CPU Temperature
BIOS SETUP UTILITY
Power
v02.61 (C)Copyright 1985-2007, American Megatrends, Inc.
Scroll down to see more items.
v02.58 (C)Copyright 1985-2006, American Megatrends, Inc.
Select Screen
Select Item
+- Change Field
F1 General Help
F10 Save and Exit
ESC Exit
v02.61 (C)Copyright 1985-2007, American Megatrends, Inc.
VCORE Voltage
[ 1.288V]
CPU PLL Voltage
[ 1.600V]
North Bridge Voltage
[ 1.264V]
DRAM Voltage
[ 1.568V]
FSB Termination Voltage
[ 1.232V]
South Bridge Voltage
[ 1.072V]
DDR3 Controller REF Voltage [ 0.784V]
SB 1.5V Voltage
[ 1.520V]
3.3V Voltage
[ 3.264V]
5V Voltage
[ 5.064V]
12V Voltage
[12.208V]
CPU Temperature; MB Temperature; NB Temperature;
SB Temperature; OPT1/2/3 Temperature [xxxºC/xxxºF]
The onboard hardware monitor automatically detects and displays the CPU,
motherboard, northbridge, southbridge, and the assigned device temperatures.
Select [Ignored] if you do not wish to display the detected temperatures.
NB Overheat Protection; SB Overheat Protection [Disabled]
The system automatically shuts down when the North Bridge or South Bridge
chipset is heated over the set temperature to protect from damage.
Configuration optitons: [Disabled] [70ºC] [80ºC] [90ºC]
OPT_TEMP1/2/3 Overheat Protection [Disabled]
The system automatically shuts down when any of the thermal sensor cables
connected to the motherboard is heated over the set temperature to protect from
damage. Configuration optitons: [Disabled] [50ºC] [60ºC] [70ºC] [80ºC] [90ºC]