Samsung 850 EVO M.2 SSD Review

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Samsung 850 EVO M.2 SSD Review. Today we examine the 850 EVO M.2, we did look at the 840 a fair while back now, so it’ll be interesting to see whats changed. M.2 is the successor of the now retiring mSATA interface. The real strength of the tech is the footprint, and those working with smaller builds, will be attracted to this benefit. Being able to assemble a compact system with the storage device integrated directly into the motherboard, is brilliant.

The EVO 850  utilizes the new 32-layer TLC 3D V-NAND technology and MGX dual-core SATA controller. Price on the day of review is about £80 here in the UK, Check other regions HERE. We’ll perform our standard testing procedure and wrap up with a conclusion.

 [Specification & Features]




    SATA 6Gb/s Interface, compatible with SATA 3Gb/s & SATA 1.5Gb/s interface


    500 GB (1GB=1 Billionbyte by IDEMA) *
    *Actual usable capacity may be less (due to formatting, partitioning, operating system, applications or otherwise)


    Up to 540 MB/sec Sequential Read *
    *Performance may vary based on system hardware & configuration


    Up to 500 MB/sec Sequential Write *
    *Performance may vary based on system hardware & configuration


    Samsung 32 layer 3D V-NAND
    Samsung 512 MB Low Power DDR3 SDRAM

3D V-NAND Technology

Samsung’s innovative 3D V-NAND flash memory architecture breaksthrough density, performance, and endurance limitations of today’s conventional planar NAND architecture. Samsung 3D V-NAND stacks 32 cell layers vertically resulting in higher density and better performance utilizing a smaller footprint.

TurboWrite Technology

Achieve incredible read/write performance to maximize your everyday computing experience with Samsung’s TurboWrite technology. You can obtain up to 2x faster random read write speeds than the award-winning Samsung 840 EVO. The 850 EVO delivers class-leading performance* in sequential read (540MB/s) and write (520MB/s) speeds. Plus, gain optimized random performance in all QD for better real-world performance.
* Performance compared to 3-Bit MLC-class SSD drives


Samsung’s Magician software enables RAPID Mode for up to 2x faster performance* by utilizing unused PC memory (DRAM) as a high-speed cache. The newest version of Samsung Magician supports up to a 4 GB cache on a system with 16 GB of DRAM.
* Compared to same drive w/out RAPID enabled

Enhanced Endurance and Reliability

The 850 EVO doubles the endurance* and reliability** compared to the previous generation 840 EVO** and features a class-leading*** 5 year warranty. With enhanced long-term reliability, the 850 EVO assures long-term dependable performance of up to 30% longer than the previous generation 840 EVO.
* Measured by Terrabytes Written (TBW)
** Measured with Sustained Performance 12hr Random Write Test
*** Highest among 3-Bit MLC-class SSD drives

Improved Energy Efficiency

The 850 EVO delivers significantly longer battery life on your notebook* with a controller designed and optimized for 3D V-NAND that supports. Device Sleep for Windows at a highly efficient 2mW. The 850 EVO supports 25% better power efficiency than the 840 EVO during write operations thanks to ultra-efficient 3D V-NAND only consuming 50% less energy than that of traditional Planar 2D NAND.
* Compared to standard hard drive & previous generation SSDs

Read more HERE

[Test Setup]


Proudly Powered by our Dimastech Mini V1.0 Test Bench


Intel® i5 4670K

Memory:Kingston HyperX Beast 2400Mhz 8GB
Motherboard:MSI Z97 GAMING 7
Video Card: MSI Radeon 270X Gaming
PSU:CoolerMaster  v750
Hard Drives:
OS:Windows 8.1 Pro 64-Bit

We would like to thank or sponsors for their support with our test systemKingston,Dismatech,Cooler Master,Noctua and MSI
Software used

  • DiskBench
  • ATTO
  • CrystalDiskMark
  • AS SSD
  • Photoshop
  • WinRaR
  • X264 Benchmark


CrystalDiskMark is a disk benchmark software. It measure sequential reads/writes speed, measure random 512KB, 4KB, 4KB (Queue Depth=32) reads/writes speed, select test data (Random, 0Fill, 1Fill), provide theme support and Multi-Language support

Download for free

crystal m.2 evo 840

The claimed “up to” figures, suggest the 850 EVO can peak at

  • Sequential Read MB/s: 540
  • Sequential Write MB/s: 500

Our testing found the 850 EVO just miss the read target, hitting 535MB/s but over performing in the write test,


Crystal Disk READ SAMSUNG M2 EVO 850

The results are sorted to show the product with the fastest SEQ read, but do pay close attention to the sub results. For example the 512k, which was the fastest we’ve ever seen


Crystal Disk WRITE SAMSUNG M2 EVO 850

Notice the improved 512K and 4K results, over the 840 EVO.



As the industry’s leading provider of high-performance storage connectivity products, ATTO has created a widely accepted Disk Benchmark freeware utility to help measure storage system performance. Disk Benchmark identifies performance in hard drives, solid state drives, RAID arrays as well as connections to storage


att m.2 evo 850

With ATTO, We consistently matched or bettered the expected speeds, again breaking past the claimed 500MB/s write speed that product is capable of.




AS SSD m.2 evo 850

As I have explained many times in the past, you should not assume a problem with results like this, just because it’s not what the box said. Some consumers  worry and suspect there is a problem with their products, when they don’t match or better the figures in every test, despite being listed as an “up to” indicator in the products description.



Here we find the EVO 850 outshine the original 840.



Not able to match the original 840’s raw write speed, but take a closer look at the improved 4K64, and more notably the 4K.




PCMark 8 combines performance benchmarking, battery life testing, a dedicated benchmark for SSDs and HDDs, and real-world tests using popular applications from Adobe and Microsoft. It’s an essential tool for anyone who wants to get the most out of their hardware.

PCMark 8 includes five new benchmark tests, each designed around a typical use scenario. Choose the benchmark that best matches your needs, or run all five for a complete picture of your PC’s performance. Each benchmark produces a score you can use to compare systems as well as detailed results you can use to gain a deep understanding of system performance

Download Basic

m.2 evo 840 PC MARK

Solid results here for the EVO 850, with the highest bandwidth results to date.


[Real World Testing]

 Sub Testing – [Compression & Extraction]

We can expand and look deeper into the drives ability more. The test method is to create a RAR archive and then extract it from a pre-configured folder. The folder contains several files type both compressible and in-compressible.

We don’t have all our previously reviewed product data for every SSD we’ve ever looked at, as this is a recent addition to the current testing suite.

Compress and Extract EVO 850


We prefer to run these additional tests, working with real data, showing results that you can relate too. The 850 EVO performs very well, bettering the only other M.2 we’ve reviewed so far.

Sub Testing – [File Copy]

The following test data is generated with Disk Bench. Moving real data to the device, these numbers ought to be something we’re all more familiar with.

These results are Average transfer speeds and not peak.

Create and Move EVO 850

Creating and moving folders with mixed data types and ISO files this time around. The results are much better here, showing the EVO 850 as the best to date.



M.2 has caused much confusion since it launched, and going forward I don’t expect that to change anytime soon. As I touched on in a past review,  mSATA wasn’t as  exactly mainstream, it was their  in the background for a long time but never really seen as an alternative to an SSD. There wasn’t anything wrong with the tech but their’s something about M.2 that does appeals more. Being integrated into most Z97 Intel boards, gave it a boost into the centre spot. When we began to test it way back, I’ll be honest I did struggle to wrap my head around it all. New form factors and compatibility issues, even now I have to check which version works, with what platform. To further add to the confusion, we’re now seeing the more powerful versions come to light (NVME) that can deliver insanely fast bandwidth.


Those devices ofcourse carriy a premium price tag, and now that M.2 has had some time to settle, pricing is more reasonable. The product we’ve looked at today is retailing for about £80 or so, with the 500GB model at just £140. Comparing that the competition with similar specced products, it’s one the best value out there. Performance was solid and consistent, on occasion bettering the claimed “up to ” speed, and in a real world environment delivers fantastic scores.


M.2 products like this one, are for a limited and niche audience, but the benefits they bring to the table are obvious, with no negative impact on ability. As always my only issue with the product, and 99% of the others like it, is the pesky green PCB. As a custom system builder, that colour coordinates their components, it’s frustrating to see a great product not in black.


Kingston DataTraveler Locker+ G2 3


We would like to thank  Samsung for providing the review sample and look forward to bring more content in the near future

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