What do you do when your micro-controller project runs out of horsepower? Well you increase the power in a way or another, like increasing clock speed (maybe up to over-clocking) or change to a faster processor family.
It promises to make your board and project go twice as fast as it normally does. The trick is to replace the existing crystal with a clock generator running at 32MHz and change a few setting to the Boards.txt file: it’s 100% compatible and 200% the speed. There is a drawback: it won’t work at +70deg anymore.
This looks interesting and more useful that the approach show on previous Arduino overclocking posting.