Your temps are normal for the workload you're running.
it is still scary, remembering 105°C is max temp. i was hoping like 80°C ++
You can use a program like smcFanControl to manually increase your fan speed and cool your computer down if you don't like the CPU temps.
i was playing on Windows, not native OSX. and the fan was loud as hell, i am sure it was 6500 rpm fanspeed.