what program is accurate?

this is my vostro laptop,using with high temperature during along time,gpu's pins had been not get in tuoch with mainboard,and my laptop had been damaged. I sent it to a repair service,they remade gpu's pins,then soldered gpu on mainboard again,and now my laptop is fine
but temperature is pretty high,tell me what program is accurate?
and how to decrease temperature ?
( sorry about my english is so bad )

 

i dont trust speedfan.
the riva tuner and gpuz seems to agree gpu is 61
however the dell utility claims 61 is chipset.

i would think the dell utility knows which sensor is where in a dell laptop.