Samsung SSD 850 Pro (128GB, 256GB & 1TB) Review: Enter the 3D Era
by Kristian Vättö on July 1, 2014 10:00 AM ESTPerformance vs. Transfer Size
ATTO is a useful tool for quickly benchmarking performance across various transfer sizes. You can get the complete data set in Bench. To highlight the performance of each capacity, I decided to divide the ATTO graphs by each capacity, which should also make the graphs a bit more readable.
IO size scaling remain very similar to the 840 Pro and EVO. It is only at the 128GB capacity where the V-NAND provides a substantial advantage and the 850 Pro is almost as fast as the 120GB Intel SSD 525, which is a SandForce based drive, so its high performance is explained by ATTO's use of compressible data.
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MrSpadge - Tuesday, July 1, 2014 - link
No, it's really "600 MB/s whatever". In reality about 550 MB/s seems to be the maximum. With 300r + 300w full duplex neither read nor write could surpass 300 MB/s.zmeul - Tuesday, July 1, 2014 - link
why I ask thisI see a lot op people putting SSDs in RAID0, and I wonder why ... to me, it seems totally pointless
the system doesn't do only writes or only reads, so what's the point? well, except in the cases where you copy/move some huge files from one matrix to another
Cerb - Tuesday, July 1, 2014 - link
Copying large files, and loading large files. Realistically, you can copy from a new SSD to another at anywhere from 250MBps to 450MBps (including OS/filesystem overhead). That's halved, or worse, copying from an SSD to itself. RAID 0 gives you an approximately linear bandwidth increase. If you don't need a logical or physical separation of data locations, RAID 0 beats a separate drive.When I'm backing up my Bethesda games directory, I wish I had more speed, as it could be done faster in a RAID. However, I only do that one or two times per month (all my saves for all my games are on automatic backup).
For typical light random IO, it very much is pointless.
457R4LDR34DKN07 - Wednesday, July 2, 2014 - link
Easy, say you have 2 sata 2.0 SSD but want sata 3.0 speeds.Kevin G - Tuesday, July 1, 2014 - link
Typo?"I bet many of you would have liked to see the 850 Pro move to the PCIe interface but I understand Samsung's decision to hold on with PCIe for a little while longer."
I think the second PCIe should be SATA.
stickmansam - Tuesday, July 1, 2014 - link
of the "on" could be a "off'Solid State Brain - Tuesday, July 1, 2014 - link
How many P/E cycles does the NAND on this drive support, by SMART data?Kristian Vättö - Tuesday, July 1, 2014 - link
I will test that as soon as I get back from Korea, as well as send you the Extreme Pro data. Sorry for not replying to your email earlier, I kind of lost focus on everything else when I started working on this review :)Solid State Brain - Tuesday, July 1, 2014 - link
No problem, thanks!extide - Tuesday, July 1, 2014 - link
You should actually put up a little pipeline article with all of this data, because it would be interesting to me, and I am sure lots of other users as well.