I've recently had my MacBook Pro 15" model late 2011 repaired, it was a graphics card problem, they changed it and now it's working.

The problem that I've encountered now is that it is overheating a lot, compared to how it used to be. I used to have temperatures of about 30-40 °C 2000 rpm (ambient temperature of 20-30 °C) using integrated graphics and a workload of CPU of about 5% max (internet browsing, and stuff like that).

And after being repaired, in the same ambient and work condition I have 60-70 °C! I don't know what they could have done to my macbook in order to have this temperatures.

I first made an SMC and PRAM reset just in case, but no things changed. Then I reinstalled OS X El Capitan, but again nothing changed. So I thought that they could have incorrectly applied the thermal paste (or it was a bad quality one) so I reapplied some of my EVGA Frostbite thermal paste, and I've finally noticed some change. The temperature (again in same work and ambient conditions) is of about 40-50 °C 2000 rpm. But it is again far from what it used to be.

Long story short (UPDATED):

* MB Pro late 2011 got graphics card broken, and repaired by certified apple repair center
* I used to have temperatures of about 30-40 °C, 2000rpm
* Now it is of about 60-70 °C, 2000 rpm
* OS X El Capitan reinstalled and PRAM, SMC reset done
* AHT made and no problem found

What can I do in order to solve this problem. I want to have my old macbook temperatures!

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UPDATE: I've performed a SMC, because I've done it before the new installation of OS X. And for my surprise, the temperature values that were displaying were wrong. Now after SMC I've got the exact same range as before changing the thermal paste :/