/* devices that don't properly handle queued TRIM commands */ Micron_M500* Crucial_CT*M500* Micron_M5[15]0* Crucial_CT*M550* Crucial_CT*MX100* Samsung SSD 8*
from drivers/ata/libata-core.c More info: http://linux.slashdot.org/story/15/06/16/201217/trim-and-linux-tread-cautiously-and-keep-backups-handy Also, my samsung 840 is slow (multisect is off and cant be enabled with hdparm). Tried update the bios but the boot cd crashed on my machine (AMD chipset related) so i will have to put it in another machine and try again... Samsung EVOs also have a firmware bug that causes them to slow down.