At one time i tried to overclock an 68882 20MHz to 50MHz that's an 150% overclock. I tried it in lightware where it performed well (speed wise) however it did generate some odd looking errors in the rendered image, telling that is was making alot of miscalculations because of the overclock. However it did not get hot or anything but there were a good risk to damage the FPU or/and the board but as being young at the time I did not regonize the danger :-)
