![]() ![]() Extra space means more room for flash storage and the various interfaces required to get better speeds out of the cards. These discrepancies in both capacity and speed are likely due to the smaller form factor of CFexpress Type A cards, which measure 20mm x 28mm x 2.8mm (WxLxD) compared to Type B, which comes in at almost double the width and a mm thicker at 38.5mm x 29.6mm x 3.8mm (WxLxD). Due to the similar form factor, Sony can use a single slot to support both memory card formats. ![]() Sony's high-end a1 camera features dual CFexpress Type A/UHS-II SD card slots. ![]() The read and write speeds also tend to be slower than that of equal-capacity CFexpress type B cards. While CFexpress Type B cards continue to be released by an array of manufacturers in capacities reaching up to 4TB, CFexpress Type A cards are limited to smaller capacities and are few and far between compared to CFexpress Type B cards.Ĭurrently, Delkin, Exascend, ProGrade Digital, Lexar and Sony are the only companies offering compelling CFexpress Type A cards, all of which have been limited to 320GB or lower. To date, the 640GB model is the largest-capacity CFexpress Type A card to be released. 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.īoth the 320GB and 640GB model offer maximum read and write speeds up to 800MB/s and 700MB/s, respectively. ![]()
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