Sony's new 640GB CFexpress Type A card is the highest-capacity to date, but it isn't cheap

Buried within Sony's FX30 announcement yesterday was another announcement for two new CFexpress Type A 'Tough' memory cards Sony will soon have available: the 320GB CEA-G320T and the 640GB CEA-G640T. Both the 320GB and 640GB model offer maximum read and write speeds up to 800MB/s and 700MB/s, respectively. To date, the 640GB model is the largest-capacity CFexpress Type A card to be announced. While CFexpress Type B cards continue to be released by an array of manufacturers in capacities reaching...