SMC Update for MacBook Pro

Apple apparently very quietly released firmware update for MacBook Pro called an SMC update on May 16. This is supposed to address boot issues, but many think that it will also help the temperature regulation. SMC stands for "System Management Control" and is "firmware" which means it controls the underlying hardware operations (and is separate from the graphical user interface of OS X.)

I have seen on the Apple.com forum (here) that some people have reported this SMC update slows down the computer because it causes the CPU speed to be locked at 100MHZ.

After some deliberation, I did it. I went ahead and installed SMC firmware update. It seemed ok and I did not notice any slowing of CPUs or otherwise.

I am not sure if it did anything to the heat, except maybe a few degrees lower. Though I see that my HardDrive's temperature is 1 C higher than it usually is. (the HDD temperature tends to be fairly constant wherease the CPU temp fluctuates fairly often depend on load.). It sort of makes sense that the CPU temp lowers because the fans kick up faster. The fans would circulate the air around the system and cause the HDD to be slightly higher...

Pure speculation at this point, but at least no crashes and weird problems.