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Help me understand Speefan results on my Nforce4 HTPC

T

tmchow

Senior member
I just put together a new HTPC based around a Gigabyte GA-K8N Ultra9 motherboard (socket 939, Nforce4 ultra).

Product page is here: Gigabyte's Product page

I installed Speefan so i could monitor temps and see waht was going on. Speefan seems to detect and reports temperature off the mobo sensors. However, I'm having trouble understanding the results.

It says I have the temp chipset "IT8712F" with a total of 3 temp sensors (temp1,2,3). I have no idea what they correspond to on the motherboard. My current readings (not very high load) are:

Temp1 = 25 Celcius
Temp2 = 32
Temp3 = 70!!

I'm trying to figure out what temp3 sensor corresponds to. I'm guessing the CPU but can't fathom why it would be so high. It's an AMD 3500+ winchester, and I have artic silver ceramique heat paste with a HUGE Zalman 7700 heatsink on it (modified with a 92mm Nexus fan to replace the stock Zalman 92mm fan for noise reduction).

Granted, the 92mm Nexus fan I modified the CPU cooler with doesn't push as much air as the stock Zalman fan, but no way shoudl I be getting 70 celcius!

Unless there is either something wrong with Speedfan's detection, or temp3 doesn't correspond to the CPU. If it's the latter I have no idea what it would correspond to, because I thought CPU was typically the hottest thing in the system. However, my motherboard has a passively cooler Nforce chipset (just a heatsink on it), so maybe that's temp3?

Any insight would be appreciated!
 
I should mention i have this cooling setup:

-AMD 3500+ with Zalman 7700 AlCu heatsink (replaced stock fan with 92mm Nexus)
-Seasonic Super Tornado 400W -- This is my only exhaust
-Zalman VF700 on my Evga 6600GT PCI-e
-80mm nexus intake
-Motherboard Nfoce4 chipset is PASSIVELY cooled (heatsink only, no fan). You can see a small pic of the mainboard here and you'll notice the gold colored heatsink)

The way the HTPC case is, I couldn't mount the 80mm intake fan directly to teh case to draw maximum cool air in. Instead, i have a hole cutout of the case, and the fan about 2 inches away from it (hopefully i'm being clear here). SO the fan isn't mounted to the case where the exhaust hole is,


 
Hi Tmchow,

Temp 1 and Temp 2 are most likely case or ambient temp readings, and they are very good. The Seasonic Super Tornado is doing a good job of venting your case.

That 70C Temp3 is indeed worrisome though. If you had purchased the Retail AMD64 CPU, maybe you want to put on the stock heatsink and see if Temp3 changes. If it does, then Temp3 is your CPU temp... And most likely it's not being read accurately.

HTH.
 
I think that might be your GPU. Speedfan overstates my Nvidia video card temperature (6800gtoc) by 26 degrees exactly at all times. There is an advanced setting in speedfan where you can put offsets on the temperatures. Run a program like Prime95 and see which temperature starts rocketing upward. Label that one as your CPU. Then run something like 3dmark and see which temperature starts increasing. Label that one your GPU. Figuring out what the offset should be is a little tricky, I had to open speedfan and the nvidia control panel and compare the temperatures as they increased and decreased to calculate how much they were off by.
 
Originally posted by: tmchow
It says I have the temp chipset "IT8712F" with a total of 3 temp sensors (temp1,2,3). I have no idea what they correspond to on the motherboard. My current readings (not very high load) are:

Temp1 = 25 Celcius
Temp2 = 32
Temp3 = 70!!

I'm trying to figure out what temp3 sensor corresponds to. I'm guessing the CPU but can't fathom why it would be so high. It's an AMD 3500+ winchester, and I have artic silver ceramique heat paste with a HUGE Zalman 7700 heatsink on it (modified with a 92mm Nexus fan to replace the stock Zalman 92mm fan for noise reduction).
Click to expand...

I have a K8NXP-9 board, and replaced the nF4 cooler with a Zalman NB47J. Also not sure about the temp readings of Speedfan, but I'm quite sure that:

Temp1 = case temp
Temp2 = CPU temp
Temp3 = ???

If I start my system from hibernation (boottime <15s) speedfan immediatly reports 70, and if I run Prime95, it goes to about 73. So this must be a reading with offset.

First I was thinking it was the nF4 temp, because I don't like the way the NB47J mounts, and the heatsink gets hot (but can still touch it without getting burned).

Peter
 
I think MrControversial is right. SpeedFan may not fully support the nforce 4, so odds are it's not a temp reading it all, ignore it.
 
Everest is reading the same values but says the 70 degrees are CPU - which I'm sure ISN'T!

It would be nice to have a list of addresses from NVIDIA or Gigabyte so we can compare it with the sensor-addresses SpeedFan finds

Peter
 
sure 🙂

we're talking Gigabyte here... If I had known about the lousy measurements and support, I would have bought something else...

What I wanted to say: bios and their easytune5 only show CPU temp, nothing else...

Peter
 
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