I think you know how to google to find such apps but not all chips have temp sensors and then you have software that may or may not work on your model.
Why I can't answer is I don't own an x60 or see one at the office. It appears you have to do the work on this question.
Hello, i just replaced motherboard in my lenovo x60 thinkpad laptop, there was thermopad on NB but i replaced it by termopaste and now i want to check temperature of NB if its not too high.What software(open source should be best) can display NB temp for me ?

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