Well, it cooled down my MBP a little bit (just from memory), and it got rid of the "CPU whine." Unfortunately it made the right side fan noisey, just the common computer fan noise (slow rpm), but it's a little annoying. I'm going to give it another month or so and see what other firmware updates they do, see if they can get this down better, hahaha. After that, I might take it in and get that fan replaced. The other side is quiet, but I can hear it if I hold my head to the bottom of the laptop.