What kind of cooling would we need to keep a stick at 250mhz? xD
A small fan will do. I've always been a fan (hah.) of the
Arctic Breeze Mobile [arctic.ac] - a USB-powered fan on a flexible neck for easy positioning with plenty of air movement and relatively quiet. Though at 250, it's really not getting all that hot and even more silent options are available. As long as you keep the hot air moving off of the heat sink, there's not that much difference between a gentle breeze and a hurricane.
Very nice then. I got 2 of those exact artic usb fan as a bonus for buying some hardware from a user here. I'm guessing its not exactly efficient to run one for one usb stick but hey whatever. Lottery ticket man!