I have used Bonnie++ to benchmark the SSD (Samsung), a Transcend class 6 16 Gb card, and a SanDisk Extreme III 1 Gb card. The following are the results in numbers: Code: bonnie++ output on internal SSD (SAMSUNG), using bonnie++ -r 100 Version 1.03 ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP localhost 300M 7695 67 16013 4 8533 4 11752 99 +++++ +++ +++++ +++ ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 1986 99 +++++ +++ +++++ +++ 1999 99 +++++ +++ 7332 99 localhost,300M,7695,67,16013,4,8533,4,11752,99,+++++,+++,+++++,+++,16,1986,99,+++++,+++,+++++,+++,1999,99,+++++,+++,7332,99 bonnie++ output on Transcend class 6, 16 Gb sdhc memory card (in left card reader), using bonnie++ -r 100 Version 1.03 ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP localhost 300M 4508 46 7355 4 7754 6 10947 98 +++++ +++ +++++ +++ ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 47 96 118 96 607 97 81 97 125 97 215 99 localhost,300M,4508,46,7355,4,7754,6,10947,98,+++++,+++,+++++,+++,16,47,96,118,96,607,97,81,97,125,97,215,99 bonnie++ output on SanDisk Extreme III, 1 Gb sd memory card (in right card reader), using bonnie++ -r 100 Version 1.03 ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP localhost 300M 10910 98 20109 13 10339 8 11810 99 +++++ +++ +++++ +++ ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 52 98 131 98 667 99 86 98 128 98 217 99 localhost,300M,10910,98,20109,13,10339,8,11810,99,+++++,+++,+++++,+++,16,52,98,131,98,667,99,86,98,128,98,217,99 Note that the SanDisk Extreme III was tested in the right card reader whereas the Transcend was tested in the left reader (as storage expansion). The results seem to indicate that the SanDisk is faster in sequential write than both the SSD (x1.4 or x1.3, for "per character" and "block", respectively), and the Transcend (x2.4 or x2.7).
I think it would be interesting to see comparative results from other cards... Bonnie++ is on sourceforge (http://sourceforge.net/projects/bonnie). I used the following command (to restrict the memory usage to 100 Mb, and thereby the file size to 300 Mb): Code: bonnie++ -r 100 -d /path/to/directory/on/memory/card
