<p><strong>" However, the write speed seems slow for an XQD cards"</strong><br />...yes it is , and that's why I run a test with 3 cards, two XQD : Sony N 64GB + Lexar 1333 64GB and one CF : Sandisk Extreme 64GB/120MB/s (in this order)<br /> Why those ? : because they are the cheapest of their kind and almost the same on the paper.<br /> Equipment : One PC with Windows 7(Intel I7) and SSD hard drive and two card readers, Lexar and Sony XQD, both USB 3.<br /> The file to move : one folder(5,66GB) containing 635 pictures.<br /> The write(from SSD to card) time on the cards was : 4M46s, 2M39s and 1M48s.<br /> The read(from card to SSD) time was aprox : 8seconds, 7s and 5s<br /> Conclusion : <br /> -if you want speed on the XQD, you have to buy the latest models<br /> -CF is not dead yet - they are fast enough if you have a deep buffer.</p><div></div>