Thermal diode lower limit?

[Lmandrake]

I am running a 566 celeron on a Soyo 6BA+IV and an ASUS fcpga slocket with the latest Soyo bios and a watercooled 72 watt peltier (72 watts @ 12 volts) and have a strange problem.

After redoing my waterblock and cold plate setup I have been running at a variety of speeds from 850 to a very unstable 1007 with voltages from 1.7 to 1.85. The strange thing is that my internal diode temp stays at 32 degrees F at all these speeds and voltages, even after running Prime etc.

My cold plate is a 3/16 thick by 2" by 2.125" copper slab. I screwed up the external thermistor for my rat shack thermometer so I can't read the temps off the cold plate and my mobo only supports the thermal diode so I cant read temps anywhere but the core.

If I go into the bios setup screen when I first boot, I can watch the temps go down but it never seems to go below 32. Once it gets to 32, it seems to stay there, in both the bios and MBM, no matter what I throw at it. (I am too much of a pansy to go above 1.85 volts)

Is it possible that the thermal diode readout wont go any lower than 32 F, O C and my cpu is actually colder?

Anybody got any experience, tips or ideas? (I am going to try clearing the bios and resetting it.)

 

[BuddyHolly]

Here is what I found with my Abit Be6r2. In the bios, it does not read below 0. It goes down to 32f and then says "na". In Motherboard monitor, you have to enable negative readings. Not sure where it is, but otherwise it will not go below 0c or 0f. I have gotten mine down to -4.2F, with regular water, so I know it will read below 0f. Hope this helps,