ACPI... what is it, and how hot should it be?

my ACPI temp under heavy load goes to 87c.... what exactly is acpi and what are your temps?

trying to get an idea what the norm is... if such thing exists anymore.

 

Here is what I found....

http://www.webopedia.com/TERM/A/ACPI.html

My temp is 43/60C max/min.

 

Wow that is pretty high, I got really worried when mine reached 74C. 74C was the highest mine has ever gone. Typically idles around 40C.

 

=(

crap, i guess i should call dell about it

 

I see mine's idling at around 50 degrees. Under stress it peaks higher than anything else! It peaks at around 85 degrees while my GPU is around 79.

 

my gpu is same as urs temp wise.... as for the ACPI temp ours is also similar... so i guess its either we both got screwed by dell or its normal temps?



as for dell, i called them and spoke with them tonight regarding ACPI temps and they gave me the standard text book answer about how i have warranty so when it breaks i am covered..... mind you my question was whether or not 80+ celsius ACPI temp was bad. whatever, if it breaks it breaks i suppose.

 

I'm pretty convinced that the THM_ ACPI Thermal Zone is a temperature sensor of the intel PM965/GM965 chipset.

If you have a M1530 it will be pretty related to the CPU temps, since both are connected by a single heat pipe. The M1330 cools all three CPU, GPU, chipset with a single heatpipe and the chipset will be closer to the maximum temp of the other two devices.

ACPI is just the generic interface to read those temperatures. This allows different operating systems to read the temps, without knowning the specific temperature sensor and its characterisic field to calculate the temps. This is done by the BIOS (the SMBIOS to be more precise) and exposed in the ACPI interface.

 

Yes 7oby is correct.

The ACPI TZ is what triggers the fans when cooling is needed. It is to keep the whole system board cool (CPU,GPU,etc). It is also what shuts off your notebook when its overheating.

Before on-die sensors were made, we only had ACPI thermal zone temps.

 

Certainly I don't know for sure whether they thermal values that are reported through the ACPI interface correspond to the internal sensors of the PM965/GM965 chipset.

I just want to add that these internal sensors indeed exist:
section 11 : Internal Thermal Sensors
http://www.intel.com/Assets/PDF/datasheet/316273.pdf

By using i8kfanui we know that the Dell XPS has much more sensors, which can be read. Which one exactly corresponds to the ACPI values is to some degree speculation. In fact the ACPI may even be the maximum of a bunch of sensors.

One strange thing I noticed. Not all software gets updates on those values. e.g. Speedfan can read those as well, but the values are stuck. I filed a bugreport, but it doesn't get much attention:
http://www.bugtrack.almico.com/view.php?id=1187

HWMonitor
http://www.cpuid.com/hwmonitor.php
displays chipset and GPU temps just fine.

I'm using a little gadget to have those values on my desktop:

http://blog.orbmu2k.de/tools/hardware-monitor-gadget-host/

There are some more gadgets on this page like this one:

 

looking at your temps i assume those are while its idle... your in the 40's range, my computer when idle is around the lower 50's. however, lastnight i left my computer on on purpose and went to sleep, this morning i found out that the highest temp reached was in upper 60's for all fields (cpu, gpu, hdd, etc) when the computer was supposedly on idle.....

dont get why the idle temp when not in use is higher versus temp when in light use (internet, etc.)

by the way what is the name of that first gadget with the cpu temp sensors? i been looking for something like that

 

I don't think we can compare numbers. I'm X3100 user and processor is undervolted. It all depends. If people are using a Zalman NC-1000 they even have lower numbers.

Computer is NOT Idle.

After three minutes of idle Vista will start defragmentation task. And if you've done that already manually, it starts every wednesday 1 a.m. Just check your tasks.

I provided a link right underneath the gadget. It's nice, but it requires some knowledge to install. You need three tools (HWMonitor, the adapter and a gadget). You also need to know how to get a tool started automatically that requires UAC access rights.

I just recognized the blog is german. Here's the gadget:
http://thehobbylounge.com/forum/index.php?topic=4273.0

But you need the Gadget Host as well. Probably have google translate the blog.

 

thanks man!