Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

The temps reported on my new A8N-SLI Premium right, but I'm hoping
someone can share his experience with me.

I get these temperatures from three places: BIOS Hardware Monitor, Asus
Probe, and nVidia Monitor.
My CPU temp is reported as 25-29°C
My System temp is reported as 30-33°
My CPU is an Athlon 64 3500+ (Venice) and my CPU cooler is an XP120 with
the fan at 1850rpm.
Even on Sisoft Sandra's burn-in app, the temp won't go above 29° with a
room temp of about 23° and the case open.
Indeed, the entire heatsink is very cool to the touch.

The CPU temp seems too low to be real. Compared to my other Asus board
(A7M266), the system temp seems to high to be correct. And it's
difficult to understand how the CPU temp could be lower than the system
temp. Anyone with the same hardware out there? What could be going on?

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

"milleron" <miller.90@osu.edu> wrote in message
news:XFove.17119$pU.15838@tornado.ohiordc.rr.com...
> The temps reported on my new A8N-SLI Premium right, but I'm hoping someone
> can share his experience with me.
>
> I get these temperatures from three places: BIOS Hardware Monitor, Asus
> Probe, and nVidia Monitor.
> My CPU temp is reported as 25-29°C
> My System temp is reported as 30-33°
> My CPU is an Athlon 64 3500+ (Venice) and my CPU cooler is an XP120 with
> the fan at 1850rpm.
> Even on Sisoft Sandra's burn-in app, the temp won't go above 29° with a
> room temp of about 23° and the case open.
> Indeed, the entire heatsink is very cool to the touch.
>
> The CPU temp seems too low to be real. Compared to my other Asus board
> (A7M266), the system temp seems to high to be correct. And it's difficult
> to understand how the CPU temp could be lower than the system temp.
> Anyone with the same hardware out there? What could be going on?

Never look a gift horse in the mouth. Is the computer actually working? If
so, enjoy.

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

On Sat, 25 Jun 2005 20:55:19 -0600, "Mark A" <nobody@nowhere.com>
wrote:

>"milleron" <miller.90@osu.edu> wrote in message
>news:XFove.17119$pU.15838@tornado.ohiordc.rr.com...
>> The temps reported on my new A8N-SLI Premium right, but I'm hoping someone
>> can share his experience with me.
>>
>> I get these temperatures from three places: BIOS Hardware Monitor, Asus
>> Probe, and nVidia Monitor.
>> My CPU temp is reported as 25-29°C
>> My System temp is reported as 30-33°
>> My CPU is an Athlon 64 3500+ (Venice) and my CPU cooler is an XP120 with
>> the fan at 1850rpm.
>> Even on Sisoft Sandra's burn-in app, the temp won't go above 29° with a
>> room temp of about 23° and the case open.
>> Indeed, the entire heatsink is very cool to the touch.
>>
>> The CPU temp seems too low to be real. Compared to my other Asus board
>> (A7M266), the system temp seems to high to be correct. And it's difficult
>> to understand how the CPU temp could be lower than the system temp.
>> Anyone with the same hardware out there? What could be going on?
>
>Never look a gift horse in the mouth. Is the computer actually working? If
>so, enjoy.
>
Yeah, it works great. It's just that I've never seen MB temps higher
than CPU temps before, so I'm very curious.
Ron

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

Asus Probe isn't reliable.
Most people uses to test with Everest
http://www.lavalys.com/products/ov [...] =1&lang=en


"milleron" <millerdot90@SPAMlessosu.edu> escribió en el mensaje
news:uklsb11gitbmqjl5h98uu15n9p9fobim0a@4ax.com...
> On Sat, 25 Jun 2005 20:55:19 -0600, "Mark A" <nobody@nowhere.com>
> wrote:
>
>>"milleron" <miller.90@osu.edu> wrote in message
>>news:XFove.17119$pU.15838@tornado.ohiordc.rr.com...
>>> The temps reported on my new A8N-SLI Premium right, but I'm hoping
>>> someone
>>> can share his experience with me.
>>>
>>> I get these temperatures from three places: BIOS Hardware Monitor, Asus
>>> Probe, and nVidia Monitor.
>>> My CPU temp is reported as 25-29°C
>>> My System temp is reported as 30-33°
>>> My CPU is an Athlon 64 3500+ (Venice) and my CPU cooler is an XP120 with
>>> the fan at 1850rpm.
>>> Even on Sisoft Sandra's burn-in app, the temp won't go above 29° with a
>>> room temp of about 23° and the case open.
>>> Indeed, the entire heatsink is very cool to the touch.
>>>
>>> The CPU temp seems too low to be real. Compared to my other Asus board
>>> (A7M266), the system temp seems to high to be correct. And it's
>>> difficult
>>> to understand how the CPU temp could be lower than the system temp.
>>> Anyone with the same hardware out there? What could be going on?
>>
>>Never look a gift horse in the mouth. Is the computer actually working? If
>>so, enjoy.
>>
> Yeah, it works great. It's just that I've never seen MB temps higher
> than CPU temps before, so I'm very curious.
> Ron

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

"milleron" <millerdot90@SPAMlessosu.edu> wrote in message
news:uklsb11gitbmqjl5h98uu15n9p9fobim0a@4ax.com...
> Yeah, it works great. It's just that I've never seen MB temps higher
> than CPU temps before, so I'm very curious.
> Ron

Mine is the same way. I think it is partly because of the heat from the
video card.

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

"Mark A" <nobody@nowhere.com> wrote in message
news:Q5udnc151sT9-SPfRVn-gg@comcast.com...
> "milleron" <millerdot90@SPAMlessosu.edu> wrote in message
> news:uklsb11gitbmqjl5h98uu15n9p9fobim0a@4ax.com...
>> Yeah, it works great. It's just that I've never seen MB temps higher
>> than CPU temps before, so I'm very curious.
>> Ron
>
> Mine is the same way. I think it is partly because of the heat from the
> video card.
>

Mine is like that too. The CPU temp currently 31c while the motherboard temp
is showing at 34c.

I thought there was something wrong with the sensors at first but if I touch
the base of the heatsink on the CPU it's only just warm whereas my old XP
got very hot indeed.

Another (initially disturbing) aspect to this is the low temps cause the CPU
fan to stop (it's stopped now as I type this) yet the CPU temp doesn't rise
unless I play a game or something a bit more processor intensive. The fan
then wakes up but only at around 2000rpm which is still barely audible.

Who needs to spend a fortune on a quiet PC when standard kit is as good as
this? :-)

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

On Sun, 26 Jun 2005 02:16:32 -0600, "Mark A" <nobody@nowhere.com>
wrote:

>"milleron" <millerdot90@SPAMlessosu.edu> wrote in message
>news:uklsb11gitbmqjl5h98uu15n9p9fobim0a@4ax.com...
>> Yeah, it works great. It's just that I've never seen MB temps higher
>> than CPU temps before, so I'm very curious.
>> Ron
>
>Mine is the same way. I think it is partly because of the heat from the
>video card.
>
So does anyone know where the "motherboard" sensor is located? Could
it be reporting the southbridge temperature? My "system" temp with my
older Asus board is a reasonable approximation of room temp -- about
4-5°C warmer. On the A8N-SLI Premium, it's really not. I can measure
the temperature coming out of the top and rear vents of my case, and
the reported "system" or "motherboard" temp is a good 10-11° warmer.
I don't really know of any location on the motherboard that would be
that much hotter other than the southbridge.

Again, I'm just curious to know what's really being reported. I'm
hoping that there's an engineer type who can say where the sensor's
located.

Ron

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

> older Asus board is a reasonable approximation of room temp -- about
> 4-5°C warmer. On the A8N-SLI Premium, it's really not. I can measure
> the temperature coming out of the top and rear vents of my case, and
> the reported "system" or "motherboard" temp is a good 10-11° warmer.
> I don't really know of any location on the motherboard that would be
> that much hotter other than the southbridge.

The same here. This sensor is certainly near the CPU or chipset. With MBM
I've found a third sensor which seems to be more realistic to me: 29° C.
That's close to the value of my former hardware in my pc case: P4C800-E. I
was shocked to see about 40° C after changing to AMD/A8N-SLI Premium.
I also want to know, where are the sensors located on this board ?

bye

tom

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

On Mon, 27 Jun 2005 08:37:44 +0200, "tom" <te1@bigfoot.com> wrote:

>> older Asus board is a reasonable approximation of room temp -- about
>> 4-5°C warmer. On the A8N-SLI Premium, it's really not. I can measure
>> the temperature coming out of the top and rear vents of my case, and
>> the reported "system" or "motherboard" temp is a good 10-11° warmer.
>> I don't really know of any location on the motherboard that would be
>> that much hotter other than the southbridge.
>
>The same here. This sensor is certainly near the CPU or chipset. With MBM
>I've found a third sensor which seems to be more realistic to me: 29° C.
>That's close to the value of my former hardware in my pc case: P4C800-E. I
>was shocked to see about 40° C after changing to AMD/A8N-SLI Premium.
>I also want to know, where are the sensors located on this board ?
>
>bye
>
>tom
>
I found that extra sensor with Lavalys Everest, and it's similar to
yours. My temps are reported there as:
motherboard 41
CPU 26
"Aux" 36

(The BIOS Hardware reports the CPU to be 36 and the system to be 41)

I suspect that the CPU is 36, the motherboard's 26, and the
southbridge is 41, but I still don't know how to be sure. I just
can't imagine anything on the motherboard being hotter than the CPU
unless it's the southbridge, (You can put your 37°-finger right on the
southbridge's heatpipe receptacle, and it's barely warm to the touch.)

Ron

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

In article <q001c1tljqvs9ctm4vfr7tu9h1isar06mf@4ax.com>,
miller.90@spamlessosu.edu wrote:

> On Mon, 27 Jun 2005 08:37:44 +0200, "tom" <te1@bigfoot.com> wrote:
>
> >> older Asus board is a reasonable approximation of room temp -- about
> >> 4-5°C warmer. On the A8N-SLI Premium, it's really not. I can measure
> >> the temperature coming out of the top and rear vents of my case, and
> >> the reported "system" or "motherboard" temp is a good 10-11° warmer.
> >> I don't really know of any location on the motherboard that would be
> >> that much hotter other than the southbridge.
> >
> >The same here. This sensor is certainly near the CPU or chipset. With MBM
> >I've found a third sensor which seems to be more realistic to me: 29° C.
> >That's close to the value of my former hardware in my pc case: P4C800-E. I
> >was shocked to see about 40° C after changing to AMD/A8N-SLI Premium.
> >I also want to know, where are the sensors located on this board ?
> >
> >bye
> >
> >tom
> >
> I found that extra sensor with Lavalys Everest, and it's similar to
> yours. My temps are reported there as:
> motherboard 41
> CPU 26
> "Aux" 36
>
> (The BIOS Hardware reports the CPU to be 36 and the system to be 41)
>
> I suspect that the CPU is 36, the motherboard's 26, and the
> southbridge is 41, but I still don't know how to be sure. I just
> can't imagine anything on the motherboard being hotter than the CPU
> unless it's the southbridge, (You can put your 37°-finger right on the
> southbridge's heatpipe receptacle, and it's barely warm to the touch.)
>
> Ron

IT8712F SuperI/O and hardware monitor

LPC based (easier for software to find)
Eight voltage sensors:
Pin98 2 volt for Vcore1 of CPU
Pin97 2 volt for Vcore2 of CPU
Pin96 3.3 volt for system
Pin95 5 volt for system
Pin94 +12 volt for system
Pin93 -12 volt for system
Pin92 -5 volt for system
Pin91 5 volt for VCCH (possibly meaning +5VSB)
Three temp sensors:
Pin89 TmpIn1 Transistor, diode, or thermistor based input
Pin88 TmpIn2 Transistor, diode, or thermistor based input
Pin87 TmpIn3 Transistor, diode, or thermistor based input

If a person wanted to determine what was hooked up, they would
start tracing copper wires from pins 87 through 89 on the IT8712F
SuperI/O chip. The software doesn't know, on the temp inputs,
what type of device is being used. (It would be hard coded in
the BIOS, one would hope.) The software needs to know
the device type (transistor, diode, thermistor), as the voltage
to temperature conversion formula will be different for each.
While ITE attempted to standardize the use of voltage inputs
on pin 98 through 91 (by assigning standard meanings to them,
and implying standard scale factors in use for each one), there
are no standards for the temperature inputs in the datasheet.

http://www.iteusa.com/product_info [...] 8712_2.asp

There is a register that would be set up by the BIOS, that
indicates whether a diode/transistor or a thermistor is
being used on a channel. Now, how do you read the registers
on a chip like that ? That is the question... (This problem
would likely be easier to investigate in Linux, than in
Windows.)

For thermistors, the practice is pretty standard, to use
a 10K ohm thermistor (value at 25 degrees C), and a 10K ohm
resistor to make a voltage divider. The thermistor used also
has a certain beta value (3435?), which seems to be common from
board to board. For the most part, that means a utility
should be able to deal successfully with a thermistor,
if it knows it is a thermistor. (These thermistors are
non-linear devices, so there is a conversion curve - it
looks like the 8712F has a ROM lookup table inside, forcing
the thermistor to be a standard type for sure.)

I don't know right off hand, what math is used for diode type
sensing, but presumably if you trace down the source for
"lm_sensors" or the like from Linux, the method should become
clear.

As for "what do thermistors look like", unfortunately some
of the surface mount ones I've looked at, are not that much
different than ordinary resistors in appearance. If a
thermistor is used in a processor socket, and the socket has
a hole in the center, chances are you'll see the thermistor
in the hole area. For motherboard temps, you'd have to trace
conductors to try and find the thing. Motherboards usually
have four layer stackup (with the odd one using six layers),
so unfortunately not all the copper is visible from the
outside of the board. Good luck figuring it all out :-)

Paul

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

Paul,

thank you for your very informative contribution

> outside of the board. Good luck figuring it all out :-)
He, he, I guess dying dumb in this case is the more simple way than tracing
for those temp sensors ;-)

bye

tom

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

Hi,

My A8N Sli premium is reporting temps of:

36 Degrees for the CPU,
51 Degrees for the system,
73 Degrees for the GPU (!)

However, using the Everest utility, I get:

Motherboard: 51 C
CPU: 25 C
AUX: 36 C
GPU: 62 C
GPU Ambient: 49 C

The southbridge is so hot to the touch, that you can barely touch it.
The southbridge itself is very hot, but the fins are quite cold. I am
using a lian li case, so the motherboard is upside down - I assume this
doesn't make a difference. Really confused by these results

tom wrote:
> Paul,
>
> thank you for your very informative contribution
>
> > outside of the board. Good luck figuring it all out :-)
> He, he, I guess dying dumb in this case is the more simple way than tracing
> for those temp sensors ;-)
>
> bye
>
> tom

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

On 1 Jul 2005 01:45:04 -0700, jgabbai@gmail.com wrote:

>Hi,
>
>My A8N Sli premium is reporting temps of:
>
>36 Degrees for the CPU,
>51 Degrees for the system,
>73 Degrees for the GPU (!)
>
>However, using the Everest utility, I get:
>
>Motherboard: 51 C
>CPU: 25 C
>AUX: 36 C
>GPU: 62 C
>GPU Ambient: 49 C
>
>The southbridge is so hot to the touch, that you can barely touch it.
>The southbridge itself is very hot, but the fins are quite cold. I am
>using a lian li case, so the motherboard is upside down - I assume this
>doesn't make a difference. Really confused by these results


There's a thread in the A8N-SLI Premium group at the Asus.com forums
in which a user says he's documented that mounting the motherboard
upside down in Lian Li cases like the V1100 and V2100 leads to "rapid
overheating of the chipset." My nForce chipset is JUST BARELY warm to
the touch. I'd strongly suggest that you not run your A8N-SLI Premium
in that configuration. I don't think the heatpipe cooling system
works with the heatsink lower than the chipset. (There was a similar
problem with positioning in the earlier heatpipe CPU heatsinks, and
now some of the manufacturers advertise that their latest versions
work in "any position." I deduce that Asus didn't implement this
latest technology in the A8N-SLI Premium cooling system.)

For me, Everest reports
25° for the "CPU"
36° for "Aux"
41° for the "Motherboard"

I strongly suspect that your CPU is 36° and that the "GPU" of 62°
reading is actually a sensor in the nForce southbridge. It's too hot
Your experience with the very hot southbridge rather confirms my
suspicion that the second sensor on the A8N-SLI Premium ("motherboard"
in Everest, Temp 2 in MBM, and "MB" in Asus Probe) is the chipset and
that the sensor reported by Everest as CPU (not reported by Asus Probe
at all but as ITE872F-3 in MBM) is actually a sensor on the
motherboard that, for practical purposes, measures the case
temperature. This third sensor closely approximates the room-air
temperature in my setup.

>tom wrote:
>> Paul,
>>
>> thank you for your very informative contribution
>>
>> > outside of the board. Good luck figuring it all out :-)
>> He, he, I guess dying dumb in this case is the more simple way than tracing
>> for those temp sensors ;-)
>>
>> bye
>>
>> tom

Ron

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

milleron wrote:
> On Sat, 25 Jun 2005 20:55:19 -0600, "Mark A" <nobody@nowhere.com>
> wrote:
>
>
>>"milleron" <miller.90@osu.edu> wrote in message
>>news:XFove.17119$pU.15838@tornado.ohiordc.rr.com...
>>
>>>The temps reported on my new A8N-SLI Premium right, but I'm hoping someone
>>>can share his experience with me.
>>>
>>>I get these temperatures from three places: BIOS Hardware Monitor, Asus
>>>Probe, and nVidia Monitor.
>>>My CPU temp is reported as 25-29°C
>>>My System temp is reported as 30-33°
>>>My CPU is an Athlon 64 3500+ (Venice) and my CPU cooler is an XP120 with
>>>the fan at 1850rpm.
>>>Even on Sisoft Sandra's burn-in app, the temp won't go above 29° with a
>>>room temp of about 23° and the case open.
>>>Indeed, the entire heatsink is very cool to the touch.
>>>
>>>The CPU temp seems too low to be real. Compared to my other Asus board
>>>(A7M266), the system temp seems to high to be correct. And it's difficult
>>>to understand how the CPU temp could be lower than the system temp.
>>>Anyone with the same hardware out there? What could be going on?
>>
>>Never look a gift horse in the mouth. Is the computer actually working? If
>>so, enjoy.
>>
>
> Yeah, it works great. It's just that I've never seen