A couple of weeks ago I ordered a custom single stage phase unit and I've fininaly got chance to have a play with it today 
I'm going to use my P5E VM HDMI and a E8600, It took about an hour to insulate the board and get it ready.
Results
As far as temperatures go the unit has been tuned to hold 400w of heat load @ -40c, Core temp and real temp will not work at - temperatures the only way I can seem to get any temperature readings is using the motherboards temperature sensor but it will not read below -20c

I'm going to use my P5E VM HDMI and a E8600, It took about an hour to insulate the board and get it ready.
Results

As far as temperatures go the unit has been tuned to hold 400w of heat load @ -40c, Core temp and real temp will not work at - temperatures the only way I can seem to get any temperature readings is using the motherboards temperature sensor but it will not read below -20c




