Large difference in software temperature readings... explain

screwballl · October 26th, 2006

Hows this for a kicker:
I had a 1800+ (266) on a Asus A7M266 and had a Volcano5 hsf on it and running at 100%, it sat at a constant 65ºC and idle was low 50s.

My current system (below in signature) has a confusing situation.
Speedfan shows the temps as 50ºC Surface, 70-72ºC CPU and others... yet Asus PC Probe shows the cpu temp at the same time as 50ºC and surface as 31ºC....
Is speedfan mistaken to where the cpu is at 50º, the surface (temp2) is 31º and the GPU is at 70-72???

The real kicker is if I stop F@H so it idles, the high temp drops to 64ºC (from the 70-72º) and the other one stays at 47-50ºC

This cpu has a Volcano7 hsf with adjustable speed and I have it set at ~8500RPM but it can go up to 11500RPMs without much temp deifference (both of the above mentioned temps drop 2º)

SO my question is it really the cpu running at 50 or 70? I have always believed that the cpu this whole time was runnung at 70 as there has not been any ATi utility to tell me that GPU temp (one thing I miss from the nvidia days)

polobunny · October 26th, 2006

Speedfan might be wrong. Sometimes there's an offset you need to adjust or even the divider.
On some boards Speedfan can detect temps under zero when it's not the case at all, the best way is to mesure the temperature with a laser thermometer than try to find the most logical temperature in Speedfan. (Normally the closer one, but even then it can be quite hard)

screwballl · October 26th, 2006

I was thinking since AsusProbe detected it at 50 that my cpu has been running nice and cool all this time and I just forever was looking at the wrong temps... the BIOS even shows it around 60 but I just figured that was idle.

Oh well no biggie, its just a SocketA 3000+

**MantaBase** · October 28th, 2006

You could try everest and see what it says. I *think* it reads right from the MB sensor and should be accurate. At anyrate, you can have the 2 out of 3 thing and hopefully it wwill show you which is off.

Manta

yurimxpxman · October 28th, 2006

If the temperature readings are different, this usually means you're looking at the wrong readings. The labels on the temperatures aren't always correct. They're more of an educated guess most of the time. To be sure what you're looking at, you'll have to unplug the fans individually for a few moments to see what temperature goes up. But be careful if you try that!

**MantaBase** · October 28th, 2006

Quote:

Originally Posted by yurimxpxman

If the temperature readings are different, this usually means you're looking at the wrong readings. The labels on the temperatures aren't always correct. They're more of an educated guess most of the time. To be sure what you're looking at, you'll have to unplug the fans individually for a few moments to see what temperature goes up. But be careful if you try that!

This is true - especially for Fan RPM. However, if that were the case here, wouldn't some of the readings match? Or did they and I didn't see it?

Manta

screwballl · October 28th, 2006

ok so Speedfan and Everest (had a helluva time finding the free home edition) says:

Everest - SpeedFan
Mobo: 31º - 31º
CPU: 47º - 47º
CPU diode: 67º - 70º
GPU: 43º - N/A
GPU: ambient 41º - N/A
HD: 37º - 37º

no it seperates the CPU and CPU Diode? which one is the true CPU temp? ahhhhhhhh

**gvblake22** · October 29th, 2006

Quote:

Originally Posted by screwballl

no it seperates the CPU and CPU Diode? which one is the true CPU temp? ahhhhhhhh

Yeah, sometimes there are actually two different places to read the CPU temperature the "regular" CPU temp is often from the socket underneath the processor. The diode temperature usually comes right from a sensor that I think is right on the chip its self. So, obviously, the diode temp will be a little more accurate.

You could also try "Core Temp" to check temperatures.

EDIT: NEVERMIND! That Core Temp program is only for K8 processors (Athlon64) or Core or Core 2 Duo Intel processors. See the CPU Support List :doh:

screwballl · October 30th, 2006

according to that list, it includes the Sempron which early on (SocketA) was just a relabeled AthlonXP... they probably need to include socket numbers such as 754/939/940/AM2

**gvblake22** · October 30th, 2006

Quote:

Originally Posted by screwballl

according to that list, it includes the Sempron which early on (SocketA) was just a relabeled AthlonXP... they probably need to include socket numbers such as 754/939/940/AM2

Yeah, but by saying "K8 processors", that eliminates the possibility for Socket A Semprons :thumb:

October 26th, 2006	#1
screwballl Colonel Calamity Join Date: Oct 2006 Location: Sandy South Posts: 6,279 Blog Entries: 6	Large difference in software temperature readings... explain Hows this for a kicker: I had a 1800+ (266) on a Asus A7M266 and had a Volcano5 hsf on it and running at 100%, it sat at a constant 65ºC and idle was low 50s. My current system (below in signature) has a confusing situation. Speedfan shows the temps as 50ºC Surface, 70-72ºC CPU and others... yet Asus PC Probe shows the cpu temp at the same time as 50ºC and surface as 31ºC.... Is speedfan mistaken to where the cpu is at 50º, the surface (temp2) is 31º and the GPU is at 70-72??? The real kicker is if I stop F@H so it idles, the high temp drops to 64ºC (from the 70-72º) and the other one stays at 47-50ºC This cpu has a Volcano7 hsf with adjustable speed and I have it set at ~8500RPM but it can go up to 11500RPMs without much temp deifference (both of the above mentioned temps drop 2º) SO my question is it really the cpu running at 50 or 70? I have always believed that the cpu this whole time was runnung at 70 as there has not been any ATi utility to tell me that GPU temp (one thing I miss from the nvidia days) Thanks HL and Corsair! My opinions are my own and not representative of this site or its members. Last edited by gvblake22; October 27th, 2006 at 13:44. Reason: Topic split from other's thread

October 26th, 2006	#3
screwballl Colonel Calamity Join Date: Oct 2006 Location: Sandy South Posts: 6,279 Blog Entries: 6	I was thinking since AsusProbe detected it at 50 that my cpu has been running nice and cool all this time and I just forever was looking at the wrong temps... the BIOS even shows it around 60 but I just figured that was idle. Oh well no biggie, its just a SocketA 3000+ Thanks HL and Corsair! My opinions are my own and not representative of this site or its members.

October 28th, 2006	#7
screwballl Colonel Calamity Join Date: Oct 2006 Location: Sandy South Posts: 6,279 Blog Entries: 6	ok so Speedfan and Everest (had a helluva time finding the free home edition) says: Everest - SpeedFan Mobo: 31º - 31º CPU: 47º - 47º CPU diode: 67º - 70º GPU: 43º - N/A GPU: ambient 41º - N/A HD: 37º - 37º no it seperates the CPU and CPU Diode? which one is the true CPU temp? ahhhhhhhh Thanks HL and Corsair! My opinions are my own and not representative of this site or its members.

October 30th, 2006	#9
screwballl Colonel Calamity Join Date: Oct 2006 Location: Sandy South Posts: 6,279 Blog Entries: 6	according to that list, it includes the Sempron which early on (SocketA) was just a relabeled AthlonXP... they probably need to include socket numbers such as 754/939/940/AM2 Thanks HL and Corsair! My opinions are my own and not representative of this site or its members.

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October 26th, 2006	#2
polobunny T-Rex Join Date: May 2006 Posts: 4,604 Blog Entries: 6	Speedfan might be wrong. Sometimes there's an offset you need to adjust or even the divider. On some boards Speedfan can detect temps under zero when it's not the case at all, the best way is to mesure the temperature with a laser thermometer than try to find the most logical temperature in Speedfan. (Normally the closer one, but even then it can be quite hard)

October 28th, 2006	#4
MantaBase Super Moderator Join Date: Oct 2006 Posts: 322 Blog Entries: 2	You could try everest and see what it says. I think it reads right from the MB sensor and should be accurate. At anyrate, you can have the 2 out of 3 thing and hopefully it wwill show you which is off. Manta

October 28th, 2006	#5
yurimxpxman Banned Join Date: Jun 2006 Location: /home/yurimxpxman Posts: 1,695	If the temperature readings are different, this usually means you're looking at the wrong readings. The labels on the temperatures aren't always correct. They're more of an educated guess most of the time. To be sure what you're looking at, you'll have to unplug the fans individually for a few moments to see what temperature goes up. But be careful if you try that!