Im pretty sure if they clocked it higher that would be bad end result with no fan. It says operating temp is 40 in a 25 degree environment.
It's clocked at 100MHz so the chip will be taking about 1.5W. Could probably push it to 200MHz which would be 3W so long as the DC converter chip can take it, perhaps a heatsink on the chips? Lots of fun to be had.
Rich