Quote Originally Posted by Aleks View Post
I've noticed that the average speed od the 830 is around 300 MB/s, and for the 840 around 100 MB/s. How is this average speed defined? Is it an average of the read and write? Why is it so much lower for the 840? Does this speed reflect the steady state performance in a proper way?
The 830 is a MLC drive with 256GiB of NAND onboard.

The 840 (not 840 pro) is a TLC drive with 128GiB of NAND onboard.

The 830 has twice as many NAND chips that can be working, as well as a less complex programming procedure ... so it can be programmed quicker, and can handle more wear before failing.

The speeds generally reflect the lower end of steady state performance while under desktop loads. Real world desktop loads should be better because it isn't constant.

Server loads are a completely different matter and server loads generally have a much higher write amplification then these endurance tests. Hence steady state will be slower and more quickly wear the drive out.

Quote Originally Posted by Aleks View Post
One more thing, how full are your SSDs during these tests? Do you fill them up entirely and then delete them entirely, or?

I'll be following closely to see what happens with the 840...
The settings for the test are in the initial post for the 840 test.

The 840 has done pretty well in regards to endurance. As far as I can tell, the 840 is a perfectly adequate desktop drive, but perhaps a bit expensive for what you get right now.

Other TLC based drives may not be as lucky, as Samsung is currently the best at this endurance business. Will have to evaluate other TLC based drives if they ever come out.