What does 4X, 12X, 16X, 32X,and40X (1X=150KB/sec.) performance mean?
Because digital film WRITE performance is so important in capturing the right picture at the right moment, Lexar Media has implemented an easy-to-understand system to indicate the speed at which the card is capable of storing data. The system is adopted from the CD-ROM industry, in which the performance of CD-ROM drives are rated in "X" increments, where 1X is equal to a minimum sustained write speed of 150 kilobytes (KB) per second. Lexar Media will continue to introduce faster products with greater "X" ratings, giving consumers an easy way to recognize the latest in high-performance digital film.
4X = Capable of 600KB/sec. Minimum Sustained Write Speed
12X = Capable of 1.8MB/sec. Minimum Sustained Write Speed
16X = Capable of 2.4MB/sec. Minimum Sustained Write Speed
32X = Capable of 4.8MB/sec. Minimum Sustained Write Speed
40X = Capable of 6.0MB/sec. Minimum Sustained Write Speed