6000+ X2 shows odd core temps. Too low on one core

[GeezerMan]

I'm building up a rig with the 6000+ X2 .
The problem is using the Core Temp utility, it shows impossible temps. Core 0 shows 35C, Core 1 shows 19C at idle. Stock HSF. room temp about 78F. No overclock.
I know a small core temp difference is normal, but this is not normal

I know the Brisbane cores had temp reporting problems, but this is a Windsor core. The board is the Foxconn C51XEM2AA- 8EKRS2H .

Under Orthos stress test, the difference narrows, to a 10C difference between the cores

Ntune, the Nvidia utility that comes with the board, only shows one CPU idle temp of 31C, I assume it is at the IHS, and not a core measurment. Load temp around 54C

Everest , Core Temp, and the CPUID HW monitor utilities, all show the same odd temps, probably since they access the same sensors

I even see some temps flash to 0C for a split second on Core Temp

I have the latest bios installed. I can only assume the temp probes are bad, or not compatible with Core temp, or Everest, etc..

Looks like the Ntune is probably most accurate.
No overclocking will be done, but I would still like an accurate readout on a 125 watt chip
Any ideas?
Thanks

 

[Quiksilver]

Heatsink mounted correctly?
Use proper amount of thermals paster?
Heatsink isn't flat enough?
Sensors on the way out?
Whats BIOS say?

 

[Pez D Spencer]

My first guess would be the heatsink not sitting flush with the CPU. I'd pull the heatsink and remount it. If you still get screwed up readings then I'd pull it, turn it 90 degress and remount it again. Or just try another heatsink entirely.

 

[GeezerMan]

If it was not mounted right, I would not get below ambient air temps on one of the cores like I am getting. An incorrect HSF mounting would cause overheating, and the one core is reporting in the normal range, around 40C idle to a load temp of 56C. Normal for the 6000+ X2. And the other core is below normal temps, it is impossible to have temps that are below the ambient air temp.

I read that the Windsor cores have a different sensor setup than the Toledo or Manchester cores. The only thing I can figure is the sensor is bad, or the motherboard does not handle the temp reporting right, though I'm not sure how probable that would be.

 

[geokilla]

AMD CPUs don't use Core Temp! This has been said many many times! They use the Tcase temp (motherboard sensor) to determine how hot their CPUs are. If you don't believe me, search around AMD's site.

 

[GeezerMan]

Oh? never heard that. The Core Temp web pages lists the AMD X2 as being supported. I have use the same program on a Opeteron 165, and a 3800+ X2 just fine.
Everest is indicating the same odd temps too

 

[solog]

Originally posted by: geokilla
AMD CPUs don't use Core Temp! This has been said many many times!

Never heard/read that before. Maybe you should tell these guys they got it wrong:

http://www.alcpu.com/CoreTemp/supportlist.html

 

[geokilla]

Originally posted by: geokilla
Thanks Geezer, but unfortunately it can't find the Tcase max because I have the F2 stepping (AM2). I did find this, but I don't get it. Thermal Data from AMD's site. If anyone understands it, can you tell me what the Tcase max is for my CPU? The OPN is ADA3800CU B0X.

I also found this My CPU specs from AMD

 

[GeezerMan]

I didn't recall that thread, obviously. I still think Core Temp has its uses for the X2, and this is the first time I have used Core Temp on a X2 and had such a wide variance in core temps between the cores. I did read of others with a 6000+ X2 using Core Temp, and their difference between cores was not like what I see with mine. If one of my cores has a bad sensor, then a temp reading , like what other temp programs report, might not be accurate. I don't know if some reporting is made by taking an average of the two core temps, or if the mobo sensor takes its own temp measurementt, and I think you have been a bit of an ass since your first post in this thread.

 

[geokilla]

Originally posted by: GeezerMan
I didn't recall that thread, obviously. I still think Core Temp has its uses for the X2, and this is the first time I have used Core Temp on a X2 and had such a wide variance in core temps between the cores. I did read of others with a 6000+ X2 using Core Temp, and their difference between cores was not like what I see with mine. If one of my cores has a bad sensor, then a temp reading , like what other temp programs report, might not be accurate. I don't know if some reporting is made by taking an average of the two core temps, or if the mobo sensor takes its own temp measurementt, and I think you have been a bit of an ass since your first post in this thread.

Now you didn't have to say that you know =.="

It's just a pain to keep on repeating the same thing that AMD CPUs use the Tcase instead of the Tjunction.