[pHaestus]

No electrical interference from motherboard as far as I can tell; diode reader reports same temperature whether mobo is powered or not.

I calibrate the diode in a water bath over 0-45C always vs. the same temperature probe. So while the offset of the diode is a little different from CPU to CPU the dT CPU-water is always the same provided I get the same voltage delivered on the same mobo (assummmmppppppttttions!)

I was honestly planning to do all my testing after the first few "with IHS" blocks using a bare die. That's open for debate I s'pose