Beware of this SSD. I've already gone through 2 already due to random file corruption that would BSOD with STOP 7B message on a Windows 7 machine. Cloned the original drive to an M4 and no more corruption issue.
There's a reason why you can't even do a warranty service request on the TLC/840 unit on Samsung website. I wonder why. Go to http://www.samsung.com/us/support...ce/request
hit Find then Office > Memory Storage > SSD. Only the MLC/840 Pro and 830 are listed. TLC/840 units are not listed on there. TLC/840 model number starts with MZ-7TD