Given Samsung's issues with the 840 EVO (and quite possibly with TLC NAND as a whole) I wouldn't touch either 840 EVO or 850 EVO.
Just installed an 850 Pro earlier this month.
It has 10 years warranty versus 1 year for the 840's, that alone makes it worth it IMO.
Any issues with the EVO 850? Just had one put in my 2011 iMac that I am picking up today. Now I'm worried![]()
On my end it's been flawless![]()
Wait a month or two and see if it slows right down like the 840 EVO did...
I thought the 840 EVO was the best, bought 4 of them, two for cloning my system drive and two more for raiding together to do quiet USENET downloading/PAR check/unraring...
It took a couple of months before I noticed that anything I copied off the drives was reading at 20MB/sec :/
And I couldn't apply the firmware update because my SSDs were connected via Thunderbolt... the DOS updater supplied by Samsung didn't know where to look :/
I am happy with my choice of the 850 pro.
Wait a month or two and see if it slows right down like the 840 EVO did...
I thought the 840 EVO was the best, bought 4 of them, two for cloning my system drive and two more for raiding together to do quiet USENET downloading/PAR check/unraring...
It took a couple of months before I noticed that anything I copied off the drives was reading at 20MB/sec :/
And I couldn't apply the firmware update because my SSDs were connected via Thunderbolt... the DOS updater supplied by Samsung didn't know where to look :/