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<blockquote data-quote="WayneF" data-source="post: 174773" data-attributes="member: 12496">Yes, the Lexar 1000x card will be about twice as fast, if in the D800.My D800 shooing a burst of five 40 MB Raw files takes 3 seconds with it.Same using a Class 10 card takes 19 seconds (for the card LED to go out).5 x 40MB = 200 MB, /3 seconds is about 67MB/sec, very close to Gailbraiths 69 MB/sec report (previous link here),200 MB / 19 seconds is 10.5 MB/sec, which is the definition of a Class 10 card.So one 40 MB Raw every second needs 40 MB/sec.&nbsp; Lexar 1000x card will do 69MB/sec in D800.(other cameras are not as fast as the D800, but also their files are smaller.&nbsp; The speed is also dependent on how fast the camera can write it. The Lexar 1000x probably is 95 MB/s write speed, but the D800 can only go 69, and other cameras might be half of that. The camera is also doing other things, running the shutter and metering, compressing the files, writing the buffer, etc.)And of course, to access a few hundred 40MB files, you certainly will want a USB 3.0 card reader.</blockquote>

[QUOTE="WayneF, post: 174773, member: 12496"] Yes, the Lexar 1000x card will be about twice as fast, if in the D800. My D800 shooing a burst of five 40 MB Raw files takes 3 seconds with it. Same using a Class 10 card takes 19 seconds (for the card LED to go out). 5 x 40MB = 200 MB, /3 seconds is about 67MB/sec, very close to Gailbraiths 69 MB/sec report (previous link here), 200 MB / 19 seconds is 10.5 MB/sec, which is the definition of a Class 10 card. So one 40 MB Raw every second needs 40 MB/sec. Lexar 1000x card will do 69MB/sec in D800. (other cameras are not as fast as the D800, but also their files are smaller. The speed is also dependent on how fast the camera can write it. The Lexar 1000x probably is 95 MB/s write speed, but the D800 can only go 69, and other cameras might be half of that. The camera is also doing other things, running the shutter and metering, compressing the files, writing the buffer, etc.) And of course, to access a few hundred 40MB files, you certainly will want a USB 3.0 card reader. [/QUOTE]

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