yes i do have a probe attached to the under side of the amd.
i have been working on a joystick / thermistor probe system with some software i have written in vb.
on the p4 i have tested the maze 3 and my diy cup block for the past week with this system. and found the cup block 1.5C lower.
today i put the amd rig on and tested both again 3 times.
here is a link to a graph with data i captured today
http://homepage.ntlworld.com/lee_smith/graph2.jpg
it shows the cup block over 4C lower than the maze 3
this is good news but i want to know if the probe is the problem on the p4 or the block design.
i spent over 4 hours calibrating the 4 probes today including the one attached to the amd so i know the 4 probes are reporting temps true to eacn other. It does seem there s a problem with the probes that are sitting in air they fluctuate more than the ones in water and attached to the cpu.
the thermistors have a tolerance of -+0.2C between 0 and 70C.