Lm-sensors: match up reported temps to physical stuff on the board

Question

I've got lmsensors up and running on my DFI LP LT P35-T2R motherboard.  I think I can figure out what most of the data are but there are some that I don't really understand.
I am currently using Handbrake to encode some video files so the temps should be up:
$ sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +36.0°C (crit = +64.0°C)
it8718-isa-0290
Adapter: ISA adapter
in0: +1.17 V (min = +0.00 V, max = +4.08 V)
in1: +1.31 V (min = +1.28 V, max = +1.68 V)
in2: +3.28 V (min = +2.78 V, max = +3.78 V)
in3: +2.88 V (min = +2.67 V, max = +3.26 V)
in4: +2.98 V (min = +2.50 V, max = +3.49 V)
in5: +1.34 V (min = +0.58 V, max = +1.34 V)
in6: +2.02 V (min = +1.04 V, max = +1.36 V)
in7: +2.85 V (min = +2.67 V, max = +3.26 V)
in8: +3.26 V
fan1: 1523 RPM (min = 3245 RPM)
fan2: 0 RPM (min = 3245 RPM)
fan3: 0 RPM (min = 3245 RPM)
temp1: +36.0°C (low = +127.0°C, high = +64.0°C) sensor = thermal diode
temp2: +39.0°C (low = +127.0°C, high = +64.0°C) sensor = thermistor
temp3: +43.0°C (low = +127.0°C, high = +64.0°C) sensor = thermistor
cpu0_vid: +2.050 V
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +45.0°C (high = +76.0°C, crit = +100.0°C)
coretemp-isa-0001
Adapter: ISA adapter
Core 1: +44.0°C (high = +76.0°C, crit = +100.0°C)
coretemp-isa-0002
Adapter: ISA adapter
Core 2: +45.0°C (high = +76.0°C, crit = +100.0°C)
coretemp-isa-0003
Adapter: ISA adapter
Core 3: +50.0°C (high = +76.0°C, crit = +100.0°C)
Obviously the coretemp-iso-000x data are the temps for cores0-3.   
My questions are what physical component of the system are the following measuring:
1) "Adapter: Virtual device temp1:       +36.0°C  (crit = +64.0°C)"
2) "temp1:       +36.0°C  (low  = +127.0°C, high = +64.0°C)  sensor = thermal diode"
3) "temp2:       +39.0°C  (low  = +127.0°C, high = +64.0°C)  sensor = thermistor"
4) "temp3:       +43.0°C  (low  = +127.0°C, high = +64.0°C)  sensor = thermistor"
One of those should be the northbridge temp, and one of those should be the CPU temp as it's reported in the BIOS (not temp of the cores).  What are the other two and how can I know for sure which is which?

Answer 1

Sorry to bump an old post but I'm having the same problem. The examples I see here on this board save for the one above me all have CPU Temp or Sys Temp next to the values. I just have temp1, temp2, temp3. I assume I have 8 coretemps because my i7 is quad-core but with hyperthreading. But I don't know for sure. Also where is my gpu temp? All I see is the cpu0_vid voltage and I'm pretty sure it shouldn't be 0. Plus I have lots of ALARMs and I'm not sure why. The fan alarms I understand because my case fans have manual switches on the case and aren't hooked to the mobo. The setup is a asus p6t mobo, intel i7 cpu, nvidia gtx-260 vcard.
My sensors output is:
$ sensors
w83627ehf-isa-0290
Adapter: ISA adapter
Vcore: +1.03 V (min = +0.00 V, max = +1.74 V)
in1: +1.73 V (min = +0.32 V, max = +0.19 V) ALARM
AVCC: +3.33 V (min = +2.98 V, max = +3.63 V)
VCC: +3.30 V (min = +2.98 V, max = +3.63 V)
in4: +1.70 V (min = +1.81 V, max = +0.02 V) ALARM
in5: +2.04 V (min = +0.54 V, max = +0.64 V) ALARM
in6: +1.60 V (min = +0.66 V, max = +1.29 V) ALARM
3VSB: +3.41 V (min = +2.98 V, max = +3.63 V)
Vbat: +3.33 V (min = +2.70 V, max = +3.30 V) ALARM
in9: +0.00 V (min = +0.58 V, max = +1.84 V) ALARM
fan1: 0 RPM (min = 753 RPM, div = 128) ALARM
fan2: 2057 RPM (min = 423 RPM, div = 16)
fan3: 0 RPM (min = 10546 RPM, div = 128) ALARM
fan4: 0 RPM (min = 1054 RPM, div = 128) ALARM
fan5: 0 RPM (min = 2636 RPM, div = 128) ALARM
temp1: +48.0°C (high = +20.0°C, hyst = +116.0°C) ALARM sensor = thermis
tor
temp2: +40.0°C (high = +80.0°C, hyst = +75.0°C) sensor = diode
temp3: +2.5°C (high = +80.0°C, hyst = +75.0°C) sensor = thermistor
cpu0_vid: +0.000 V
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +45.0°C (high = +80.0°C, crit = +100.0°C)
coretemp-isa-0001
Adapter: ISA adapter
Core 1: +40.0°C (high = +80.0°C, crit = +100.0°C)
coretemp-isa-0002
Adapter: ISA adapter
Core 2: +45.0°C (high = +80.0°C, crit = +100.0°C)
coretemp-isa-0003
Adapter: ISA adapter
Core 3: +42.0°C (high = +80.0°C, crit = +100.0°C)
coretemp-isa-0004
Adapter: ISA adapter
Core 4: +45.0°C (high = +80.0°C, crit = +100.0°C)
coretemp-isa-0005
Adapter: ISA adapter
Core 5: +40.0°C (high = +80.0°C, crit = +100.0°C)
coretemp-isa-0006
Adapter: ISA adapter
Core 6: +45.0°C (high = +80.0°C, crit = +100.0°C)
coretemp-isa-0007
Adapter: ISA adapter
Core 7: +42.0°C (high = +80.0°C, crit = +100.0°C)
my sensors-detect is:
Driver `w83627ehf':
* ISA bus, address 0x290
Chip `Winbond W83667HG Super IO Sensors' (confidence: 9)
Driver `adt7473':
* Bus `NVIDIA i2c adapter '
Busdriver `nvidia', I2C address 0x2e
Chip `Analog Devices ADT7473' (confidence: 5)
Driver `coretemp':
* Chip `Intel Core family thermal sensor' (confidence: 9)
Driver `max6650':
* Bus `NVIDIA i2c adapter '
Busdriver `nvidia', I2C address 0x4b
Chip `Maxim MAX6650/MAX6651' (confidence: 3)
* Bus `NVIDIA i2c adapter '
Busdriver `nvidia', I2C address 0x4b
Chip `Maxim MAX6650/MAX6651' (confidence: 3)
I have modprobed the modules successfully, added the modules to rc, and added "sensors" to my daemons.
This is my lm_sensors:
# Generated by sensors-detect on Sun May 10 02:31:05 2009
# This file is sourced by /etc/rc.d/lm_sensors and defines the modules to
# be loaded/unloaded.
# The format of this file is a shell script that simply defines variables:
# HWMON_MODULES for hardware monitoring driver modules, and optionally
# BUS_MODULES for any required bus driver module (for example for I2C or SPI).
HWMON_MODULES="adt7473 coretemp max6650 w83627ehf"
# For compatibility reasons, modules are also listed individually as variables
# MODULE_0, MODULE_1, MODULE_2, etc.
# You should use BUS_MODULES and HWMON_MODULES instead if possible.
MODULE_0=adt7473
MODULE_1=coretemp
MODULE_2=max6650
MODULE_3=w83627ehf