SanDisk has today announced updated versions of its SanDisk Extreme(TM) line of high-performance CompactFlash and SD cards. The cards now deliver a minimum write speed of 9 megabytes per second (MB/sec.) and a minimum read speed of 10MB/sec. They have also been improved for use in extreme conditions, they will operate from well below freezing (minus 13 degrees F/minus 25 degrees C) to near boiling (185 degrees F/85 degrees C), and each card is ruggedized with a layer of heavy duty RTV silicone to withstand 3000 G-forces.