Samsung SSD 840 EVO mSATA (120GB, 250GB, 500GB & 1TB) Review
by Kristian Vättö on January 9, 2014 1:35 PM 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. The EVO mSATA is top of the class at all transfer sizes. Even though we're dealing with highly compressible data, which is the strength of SandForce, the EVO mSATA turns out to be slightly faster than the Intel SSD 525. Keep in mind that these tests are with an empty drive so TurboWrite plays a massive role and since the test only writes 2GB, all EVO mSATAs perform similarly regardless of the capacity.
Click for full size
Facebook
Twitter
RSS
65 Comments
View All Comments
Chubblez - Thursday, January 9, 2014 - link
I have 8 5 shelf SAN's (EMC AX4-5f) all full of 1 and 2TB drives that would disagree with you.I also have 4 256G EVO's that get hammered pretty hard in an HP server, but I can't speak to the very long term effects. Initial data tells me your wrong on that as well.
Death666Angel - Sunday, January 12, 2014 - link
I have 8 2TB drives since October 2011 running in 2 RAID 5 in my file server (consumer grade Samsung, WD, Hitachi). I have 2 1TB 2.5" drives running since 2 years in my desktop. I have a 1TB and a 1.5TB 3.5" drive for well over 4 years in external enclosures. Not one failed. So let's pit anecdotal evidence against anecdotal evidence, shall we?dgingeri - Thursday, January 9, 2014 - link
I'd like to see Samsung put out a 500Gb or 1TB SSD with a m.2 PCIe connection. That with an adapter for two m.2 PCIe drives on a PCIe x4 card would make my year. I'd finally be able to get all the drives out of my system and bring it down to just motherboard, cards, H100, and power supply.romrunning - Thursday, January 9, 2014 - link
Why does the Samsung 840 Pro score really badly in the "Destroyer" tests, but are at the top of pretty much every other benchmark shown here?Kristian Vättö - Thursday, January 9, 2014 - link
Because it only has 7% OP by default, whereas most drives have 12% nowadays. In steady-state even small differences in OP can play a major role.blanarahul - Thursday, January 9, 2014 - link
Do you think it would be beneficial to 'not' have Turbowrite at or above 500 GB and focus more on parallism?? I ask this because a 250 GB 840 Evo achieves about 260 MB/s after it runs out of TW cache. So I would expect the 500 GB or above Evo to atleast reach 500 MB/s.Solid State Brain - Friday, January 10, 2014 - link
Question: do Samsung 840 EVO SSDs have less OP than the previous 840 ones, since a percentage of the reserved space is now used for the fixed SLC cache area/TurboWrite?With trim enabled, that should not be a problem (as it makes the drive have "dynamic OP" with free space), but under intense workloads it might, if it's the case.
Kristian Vättö - Friday, January 10, 2014 - link
Technically yes. The 840 actually has slightly better IO consistency, which the higher OP explains.https://dl.dropboxusercontent.com/u/128928769/IO%2...
(The title reads Intel DC S3700 but that's because I use it's graph as a basis of other graphs to guarantee that they're all the same size)
romrunning - Friday, January 10, 2014 - link
That's interesting. I guess that means if you manually over-provision the 840 Pro, then it should dominate the Destroyer benchmark as well. It would be nice to test that scenario out.Kristian Vättö - Friday, January 10, 2014 - link
Due to the nature of the Destroyer, it's unfortunately not possible to assign the test for a certain LBA range (i.e. add OP).