Custom Cooling - Tjunction is LOWER than my Tcase???????

It is a computational error, more than likely its the BIOS revision. Have you updated your MoBo Bios to the newest release?

--Lupi!

Interesting. That doesnt really mean it is not the Bios. Thats a common error. DL Core Temp and see if it records the temps the same as HWMonitor.

You should always disable speed step while testing. It just lists another set of values that are useless for testing. I'd search the web and see if others experience the same error while using the same bios!

--Lupi!

Wow! Speed fan usually comes with that error! That they all read the same means its being interpreted as that low. Which is impossible.

Tell me what Core Temp lists the VID as!!

I have a bunch of these chips.

Just looked it up. Looks like it is a Bios bug, hehe.

http://www.google.com/search?hl=en [...] gle+Search

--Lupi

Seems to be between uGuru(software) and cpu issues. I have it installed but not running. (reason is the uguru chip on the mobo shows up as a unknown device in device manager so I installed it but never run it)

Thanks for replying, if I only knew what specifically is causing the bug. I'll try to reach computronix but if you see him on when your around the forums please tell him to go to my thread and maybe we can point out the culprit.

Thanks for the input.

jhunoh, forgive me for failing to anticipate the need to include a disclaimer informing users "This Guide does not apply to Sub-Ambient CPU coolers", however, for the other 99.9999% of the systems out there, I stand by my statement "Tjunction is always higher than Tcase, and Tcase is always higher than Ambient".

Regarding your inverted temperatures; from the Guide:


Section 9: Calibrations

Note 1: PECI (Platform Environmental Control Interface) is a BIOS feature on some (not all) recent motherboards which determines the method by which chipsets interpret and manage CPU temperature. When enabled, thermal accuracy is enhanced, and if disabled, temperatures are typically inverted, where Tcase is higher than Tjunction.

Section 15: Troubleshooting

(E) If Tcase is higher than Tjunction, then enabling PECI (if equipped) in BIOS may correct inverted temps.


If PECI isn't the issue, and since you've updated to the latest BIOS, then the problem simply points to calibrations.

Also from the Guide:


Section 5: Findings

(C) Tcase and Tjunction are both acquired from Thermal Diodes. Tcase and Tjunction analog to digital (A to D) conversions are executed by separate devices in different locations. BIOS Calibrations from motherboard manufacturers, Factory Calibrations from Intel, and popular temperature utilities are frequently inaccurate.

Section 15: Troubleshooting

(C) Any hardware and / or software may misreport Tcase and / or Tjunction temps.

(D) BIOS updates will affect the accuracy of Tcase, but will have no affect on Tjunction.


On certain motherboards, I've noted several consecutive BIOS releases which each displayed different CPU temperatures; some that were well above Tjunction as well as some that were well below Ambient. Additionally, Intel's factory DTS calibrations aren't always accurate, and sometimes aren't even close. I've also noted Cores which were more than 30c above their neighbors and didn't throttle, as well as Cores which were nearly 10c below Ambient.

Since BIOS and DTS "canned" calibrations are frequently the source of inaccurate temperatures, I feature SpeedFan 4.34 in the Guide precisely because it can provide calibrated CPU temperature AND Core temperatures in 1c increments. The solution for your rig is to follow the calibration procedure in the Guide. Substitute "Ambient" temperature for "Coolant" temperature, and use "Y = 1" for cooler efficiency.

Also, remember that the sensors tend to be more accurate at higher temperatures, so you'll have the most accurate calibration results if you don't chill the coolant below Ambient, so as to provide an environment more consistent with high-end air cooling.


Hope this helps,

Comp

No problem... always glad to help sort out these temperature problems.