The solution is to open it up and: 1) Take the heatsink out 2) Clean the old thermal paste from heatsink, CPU and GPU (use the ear cleaning sticks and optionally 99% iso-propyl alcohol) 3) Clean all the dust from fans using a smooth brush and compressed air 4) Put new quality thermal paste on CPU and GPU 5) Tighten the heatsink back and enjoy Temps will be always better under OsX compared to Widndows because Apple has very good optimizations for each chip. Having said that you should be able to sustain 3.3GHz multicore under Windows as well. Check Geekbech score before and after - should be around 12500 points for the 4850HQ model.
