Q: Possible CPU's Problems

Hi there,

A couple months ago, I've noticed my MacBook Pro running slower. First, I thought it was related to software, then I updated my OS to Mavericks, but the problems kept on happening.

Then I thought the cause was overheating and I cleaned up my fans. They were actually really dirty. After the cleaning, the overheat passed but the problems remained.

Launching is taking about 40 seconds, when it used to take about 15/20 tops. Some apps and programs are having breaks. Even when I try to watch a movie, the breaks and bumps are there, so i've already gave up on see anything here.

I already made apple hardware test, but nothing came up. I've been told that maybe it's the CPU that has been damaged from the heat. How can I be sure? What can I do? Is there any CPU test?

I have a MacBook Pro from Early 2011.

  Modelo:          MacBook Pro

  Identificador de modelo:          MacBookPro8,2

  Nome do processador:          Intel Core i7

  Velocidade do processador:          2,2 GHz

  Número de processadores:          1

  Número total de núcleos:          4

  Cache L2 (por núcleo):          256 KB

  Cache L3:          6 MB

  Memória:          4 GB

  Versão da ROM de arranque:          MBP81.0047.B27

  Versão de SMC (sistema):          1.69f4

Thank you all in advance!