The Samsung SSD 850 EVO mSATA/M.2 Review
by Kristian Vättö on March 31, 2015 10:00 AM ESTIdle Power Consumption
Since we truncuate idle times to 25µs in our Storage Bench traces, they don't give a fully accurate picture of real world power consumption as idle power consumption is not taken properly into account. Hence I'm still reporting idle power consumption as a separate benchmark because it's one of the most critical metrics when it comes evaluating an SSD for mobile use.
Unfortunately I still don't have a way to test DevSleep power consumption due to lack of platform support, but my testbed supports HIPM+DIPM power commands (also referred to as Slumber power), so the results give a rather accurate picture of real-world idle power consumption.
All Samsung's recent SSDs have had excellent idle power consumption and the 850 EVO mSATA/M.2 is no exception.
TRIM Validation
The move from Windows 7 to 8.1 introduced some problems with the methodology we have previously used to test TRIM functionality, so I had to come up with a new way to test. I tested a couple of different methods, but ultimately I decided to go with the easiest one that can actually be used by anyone. The software is simply called trimcheck and it was made by a developer that goes by the name CyberShadow in GitHub.
Trimcheck tests TRIM by creating a small, unique file and then deleting it. Next the program will check whether the data is still accessible by reading the raw LBA locations. If the data that is returned by the drive is all zeros, it has received the TRIM command and TRIM is functional.
And TRIM appears to be working fine.
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cleverdude - Saturday, April 18, 2015 - link
Bench results have not been updated.http://www.anandtech.com/bench/SSD/65
szhosain - Monday, May 4, 2015 - link
On my Lenovo W530 laptop (about 3 years old now), I just installed a Samsung 850 EVO MSATA 1TB card, and ATTO shows me poorer numbers than seen here. About 267 MB/sec for write and 280 MB/sec for read when it peaks. My 2.5" SSD drives (from OCZ) in the same system are well over 500 MB /sec.Does this perhaps mean that the MSATA interface on this laptop is limited to 3 GB/sec rather than the 6 GB /sec on the standard SATA interfaces?
That would be quite irritating!
Ethos Evoss - Sunday, June 21, 2015 - link
When it comes to mSATA or M.2 connected to SATA III there is no point purchase stupid expensive SSDs as they will perform same as cheapest ones ..So best mSATA/m.2 SSD for SATA III use is the plextor or mushkin (i preffer plextor) which cost less and has great performance
Andrew Field - Wednesday, August 5, 2015 - link
This Samsung SSD 850 EVO mSATA constantly overheats. This is especially the case when copying large files. It rises about 10C every 30-60 seconds, and does not stop until its own overheating protection kicks in. This occurs when it is in a laptop or in an external enclosure (even when open and exposed to the air).Initially I thought I had a bad piece of hardware, but I tested 5 separate units with consistent results.
If anyone decides to test this out, I did the following:
- Step 1: Select a folder with at least 100GB of data
- Step 2: Copy said folder to a new folder (on the same Samsung SSD 850 EVO mSATA)
- Step 3: Monitored the temperature
Result: The temperature begins rising sharply in a few seconds, and does not stop rising until the SSD engages its overheating protection.
greywarden - Thursday, September 17, 2015 - link
I was about to purchase (4) 250GB 850 EVO mSATA drives to put in an Addonics quad mSATA PCIe card, but seeing the latency numbers on the drive has me concerned. Should I look into purchasing a pair of the 500GB models instead? Have the pausing and crashing problems been solved with the 1TB model yet?payamfi - Tuesday, January 19, 2016 - link
Hi guys i wanna buy a memmory for my n551jx i can not decide what to buy msata evo mini or ssd evo pro can anyone help me out?fabbrimichele75 - Friday, March 25, 2016 - link
Would it be possible to know the temperature when the disk is in idle and full load?I'm mainly interested in the M.2 version.
I'm asking because I wanted to mount it on an NUC 6i5 that seems to be sensitive to high temperature.
yolomolo - Tuesday, April 19, 2016 - link
Can i get some advice from you PRO, should i better go get mSata : Samsung EVO 850 or CRUCIAL MX200 ?