Temperature monitor on A8N SLI Premium

[Derek]

With speedfan 4.27 software and this board it shows 3 temperatures on
the IT8712F chip on the ISA bus, 2 on the LM75 chip on the nForce2
SMBus, 2 on the hard disks (I have 2), on Smart bus, and 1 on the ACPI
chip on the ISA bus.

The first two on IT8712f seem to correspond to the CPU and the
motherboard (though I don't know where exactly that sensor is), the
third on IT8712F gives a reading identical to the motherboard sensor.

The two on LM75 are fixed at 126 C and never seem to change - hopefully
those are not the nForce4 MCP.

And the one on ACPI is fixed at 40 C and doesn't seem to change at all.

Does anyone know what the LM75 and ACPI readings mean? Are they invalid?

Thanks.

 

[Jim]

With speedfan 4.27 software and this board it shows 3 temperatures on
the IT8712F chip on the ISA bus, 2 on the LM75 chip on the nForce2
SMBus, 2 on the hard disks (I have 2), on Smart bus, and 1 on the ACPI
chip on the ISA bus.

The first two on IT8712f seem to correspond to the CPU and the
motherboard (though I don't know where exactly that sensor is), the
third on IT8712F gives a reading identical to the motherboard sensor.

The two on LM75 are fixed at 126 C and never seem to change - hopefully
those are not the nForce4 MCP.

And the one on ACPI is fixed at 40 C and doesn't seem to change at all.

Does anyone know what the LM75 and ACPI readings mean? Are they invalid?

Thanks.

The software that is released to monitor temperatures is famous for
spewing false results. If Everest, SiSoft and a couple others can
report temperatures within a degree or two of each other, the Asus
development team should be selling watermelons from a shack alongside
the freeway.

 

[Pascal Perrot]

I am using the rev 4.26 of speedfan and after reading news posts and co:

IT8712F-1: CPU core
IT8712F-1: motherboard 1
IT8712F-1: motherboard 2 (temp in an other place of the mobo but temp is
different than the 1st one)

LM75: no idea ! 126 means not initialized

ACPI: 40 (same as me !)
Same value reported by everest, and asus probe

 

[Derek]

I am using the rev 4.26 of speedfan and after reading news posts and co:

IT8712F-1: CPU core
IT8712F-1: motherboard 1
IT8712F-1: motherboard 2 (temp in an other place of the mobo but temp is
different than the 1st one)

LM75: no idea ! 126 means not initialized

ACPI: 40 (same as me !)
Same value reported by everest, and asus probe

Dirk, Paul - Thanks that was very helpful. I have everything under
control now and to help anyone in the same situation, the following are
the settings I used:

1) Turn off Qfan in the bios
2) Using the program Speedfan v4.27 (has more controls possible than
Qfan). In the Advanced tab set:
a) PWM to Software Control
b) Fan x Divisor to 32 (at the default value of 8 I lost speed
output below 800 rpm, it now shows speeds down to 300 rpm, and
then the fan stops)
c) PWMout at 3M or 12M (not very sensitive to this number)
3) Of course set your device's temperatures to be controlled by
whatever fans you want and trigger temperatures
4) Also, there is a "Remember it" check box - check that so all
settings remain in effect when you come out of a Resume.

This should work with motherboards that have the IT8712F sensor.

And the Nexus 120mm fans are nearly dead silent at stock 12v 1000rpm, at
800 a whisper and well below the quiet whir of a pair of Samsung drives.