Yes that is the suction line to the compressor,or return line if you will,Its pretty well iced over,and the dang thing isnt even overcharged:/ current cpu temp is 76:/, coolest I have seen is 41.5,But it was cold in my room then too,Might have to make another evap block..jtr1962 said:Is that frost on one of the lines going to the µprocessor? What are your processor temps?