I have a mid-2012 Macbook Pro purchased last year. I have had a logic board replaced due to RAM issues. I recently downloaded iStat because I have started using graphic-intensive applications and felt the laptop heat up quite a bit. The temperatures have risen to 80 degrees Celsius and higher. I am currently using a very old separate laptop fan to cool down the laptop, and though the outer bottom casing is now cool to the touch, it appears that the interior is not when using the applications. I know that Macbooks are capable of tolerating high temperatures. I have had to quit these applications after little use because I worry that it might shut down if the temperatures continue to increase (and my warranty is almost over). The fans haven't sped up at all to cool down the laptop, and it stays at around the 1950-2220 rpm range. I have read that they should speed up when temperatures rise, but this has not occurred. I downloaded a fan speed controller which seems to do the job but I would prefer if I did not have to control the fans whenever the computer heats up... I have also tried an SMC reset, which didn't improve the situation.