The 860 EVO Review: Samsung Back On Top

1TB Class Performance

Comparison Products

It's been awhile since the SATA EVO series had a quality competitor with the real potential to displace the king of consumer storage. Three products that came during the end of the 850 EVO's reign stand out. The SanDisk Ultra 3D and Western Digital Blue 3D came to market in mid-2017 and closed the performance gap with SanDisk's BiCS flash. At the end of 2017, Crucial's MX500 became the first consumer SSD to move past the 850 EVO. It uses Micron's 64-layer 3D TLC.

The Corsair Neutron XTI and Toshiba VX500 are both high-performance SSDs, but high prices and lackluster low queue depth (QD) performance made those products easy to overlook in favor of the 850 EVO.

Sequential Read Performance

To read about our storage tests in-depth, please check out How We Test HDDs And SSDs. We cover four-corner testing on page six of our How We Test guide.

High-capacity drives with optimized controllers and flash easily reach the limits of SATA during simple sequential read and write workloads.

Sequential Write Performance

We have to go beyond burst performance to find significant differences. Many of the new products with 64-layer NAND and more than a few die can saturate the SATA bus even when operating outside of the SLC buffer. As a result, there is very little variation in our new burst tests.

Sequential Sustained Write Performance

The 1TB 850 EVO can saturate the SATA bus, so it doesn't come as a surprise to see the new 860 EVO doing the same. Samsung's TurboWrite SLC cache is superior to most caching algorithms from other companies. In the screenshot above we see the result of a QD1 128KB write to the 1TB 860 EVO. This workload is the same as transferring a single file to the drive, except here we write one large file to the entire usable LBA range. The performance is consistent and free of any noticeable performance degradation as the workload transitions from the TurboWrite (SLC cache) to native TLC NAND.

Random Read Performance

Samsung is one of the few companies to list QD1 random read and write specifications. Samsung claims up to 10,000 4KB random read IOPS at QD1. Our new burst test shows us slightly less than 10,000 IOPS, but our older test produced 11,715 IOPS. In fairness, all of the SSDs score higher with the older test.

We begin to see the differences between the 860 and 850 EVO and the Crucial MX500, which currently offers the best overall SATA value. The MX500 delivers higher random read performance at low queue depths. This is one of the most important aspects of performance that relates directly to the user experience. Mixed random workloads also play a large role. 

Random Write Performance

The 1TB 860 EVO dominates the 4KB random write chart at low queue depths. It's even slightly faster than the premium 860 Pro. The EVO's TurboWrite SLC cache is responsible for the extra performance. The biggest difference between the Samsung products and the rest of the drives comes at QD2 and QD4. The 850 and 860 scale efficiently while most of the others fail to ramp as quickly. The MX500 ramps up well to QD2 but starts to regress at QD4.

70% Mixed Sequential Workload

We describe our mixed workload testing in detail here and describe our steady state tests here.

Samsung managed to increase its mixed workload performance by 60 MB/s at QD2. This doesn't seem like a significant leap, but this is a very difficult area to optimize over the SATA bus. The SATA interface can only issue read and write commands at any given time–the bus can't do both simultaneously. Switching between reading and writing involves optimizing for native command queuing and the brisk crossover from one activity to the next.

70% Mixed Random Workload

The 860 EVO trails the outgoing 850 EVO in mixed random performance. The drive also trails the MX500 at QD2, which matches the new 860 Pro with exactly 27,332 IOPS.

Sequential Steady-State

The EVO is the mainstream SATA SSD in Samsung's product line, so it wasn’t designed specifically for workstation use like the 850/860 Pro. We measure eleven workload mixtures but highlight the 70% read mixture as representative of workstation use and the 80% read mixture represents more consumer-focused workloads. The 960 EVO is much better than the 850 EVO. The 1TB MX500 provides identical performance during the read-centric section of the workload (on the left of the chart).

Random Steady-State

TurboWrite powers the 860 EVO to the highest steady-state random write performance we've measured on a consumer SSD. The new EVO even outperforms the 860 Pro by a small margin, but both have nearly identical consistency. We can recommend the 860 EVO for use in consumer RAID arrays.

PCMark 8 Real-World Software Performance

For details on our real-world software performance testing, please click here.

The 860 EVO is not as dominant as the 850 EVO in common everyday workloads. The drive is very good and has its moments, but the new EVO falls in the middle of the charts during many of the individual tests.

Application Storage Bandwidth

Averaging the results and presenting them as a throughput score provides another good view of the slim difference between some of these products. The 860 EVO is only slightly faster than the Crucial MX500 1TB that sports a $70 price break. That means the 860 EVO only offers a mere 2.647% increase in application throughput for a 21% price premium.

PCMark 8 Advanced Workload Performance

To learn how we test advanced workload performance, please click here.

The desktop-focused recovery states provide five minutes of idle time between each test run. The 860 EVO recovers better than the 860 Pro as it eases out of a steady-state condition. The 860 drives are nearly identical and slightly faster than the 850 EVO, SanDisk Ultra 3D, and Western Digital Blue 3D. 

Total Service Time

The service time test results show a large gap between the 860 EVO and the MX500 1TB during the recovery stages.

Disk Busy Time

The disk busy time test highlights how Samsung improved the EVO line in heavy workloads. The 860 EVO works for less time to finish the applications. The 850 EVO falls in line with the better products after some idle time, but the 860 EVO never gets out of shape. Samsung introduced the 850 EVO several years ago and it outperformed competing products in the degrade and steady-state tests. These results show how the rest of the industry has caught up and passed the 850 EVO in heavy workloads.

BAPCo SYSmark 2014 SE Responsiveness Test

The 860 EVO beats the impressive 860 Pro. This is one of the reasons why we prefer the EVO family for consumer workloads. The drive will feel faster according to this responsiveness measurement.

BAPCo MobileMark 2012.5 Notebook Battery Life

To learn how we test advanced workload performance, please click here.

The new 860 line should perform better in our notebook battery life test, but the results don't show that. We were surprised when we tested the 860 Pro, but now we feel the results are accurate after seeing the 860 EVO results. This is an area Samsung will have to address with firmware updates. For now, these are not great drives if you need long laptop battery life.

MORE: Best SSDs

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This thread is closed for comments
21 comments
    Your comment
  • Dark Lord of Tech
    Excellent , thanks!
  • logainofhades
    I think I would rather have the better Price/GB of an MX300. MX300 has more storage and is cheaper. The 960 evo isn't much more either really, at the 250gb level anyway.


    PCPartPicker part list / Price breakdown by merchant

    Storage: Samsung - 960 EVO 250GB M.2-2280 Solid State Drive ($118.99 @ SuperBiiz)
    Storage: Samsung - 860 Evo 250GB M.2-2280 Solid State Drive ($94.99 @ Amazon)
    Storage: Crucial - MX300 275GB M.2-2280 Solid State Drive ($89.89 @ OutletPC)
    Total: $303.87
    Prices include shipping, taxes, and discounts when available
    Generated by PCPartPicker 2018-02-08 16:21 EST-0500
  • AlistairAB
    So basically the MX500 is cheaper and even has better random read performance (the only metric i really pay attention to).

    Also Samsung doesn't provide warranty service in Canada properly, a caution to readers. (Search for horror stories about the 960 EVO warranty process in Canada at redflagdeals if you want more... basically they stonewall you requiring you to return to retailers, which is how it works in Europe, not in Canada).

    Buy Crucial.
  • ibjeepr
    Awesome, sticking with my 850 Evo 1TB then. Thanks for the info!
  • Dark Lord of Tech
    Sticking with my Samsung 960 EVO Series 1TB too , crazy fast , but the 860 is another solid release from Samsung , best on the market in terms of reliability.
  • HERETIC-1
    Nice one Chris.
    Pity no 250GB Sandisk/WD to complete the set..................
  • Martell1977
    So it seems that this is a 850 EVO but with higher bandwidth and warranty. I'm glad to see that my 850 EVO 500gb is still one of the best. Seems that performance for these drives has been stagnate for a while now.
  • Radar_1
    If I decide to head to the store and purchase a new SSD, the 850 EVO appears to still be the best bang for your dollar.
  • JonDol
    "The 860 EVO has half the endurance of the new 860 Pro, but it's still quite a bit more than competing products. It's a good argument, but who really cares?" Well, I do. For that reason I only buy the Pro ones and I'd buy the EVOs above all the others if the Pro weren't available.

    About the title: I wasn't even aware that Samsung had lost the leading spot :-)
  • AndrewJacksonZA
    Thanks for the article Chris. I enjoy reading your work.
  • Kahless01
    Oh ffs. don't do line graphs if youre just going to make a big brown line. either make it only read from 475-550 so the differences are discernable or leave the graph out. when it looks like one thick line its not giving any usable information.
  • rgeiken
    I have installed 4 850 EVO 500 Gig SSD in 4 different computers and I am an enthusiastic fan of Samsung because of that. It makes it an entirely different computer since everything happens much faster than it would with a conventional hard drive which I have used over the earlier periods of my life. The 500 Gig can be found on line for $130 to $170. Just shop around and find one at the price you are satisfied with. The Migration software worked just fine for the last 3 SSDs I installed since it was improved from the first version that they released. If you have a desktop, it is a piece of cake to clone it and replace the old one. It can be harder to do on a laptop depending on how it was made. An HP Laptop that I installed one on turned out to be a lot of mechanical working opening the computer up. With my older Lenovo, it was much easier since I only had to remove the cover from a small compartment after I had cloned the drive. It only took less than 15 minutes to install that one.
  • CRamseyer
    115752 said:
    Oh ffs. don't do line graphs if youre just going to make a big brown line. either make it only read from 475-550 so the differences are discernable or leave the graph out. when it looks like one thick line its not giving any usable information.


    Damned if you do and damned if you don't. All charts have to start with zero because some demand it.
  • CRamseyer
    545051 said:
    Thanks for the article Chris. I enjoy reading your work.


    Thanks!
  • emv
    Interesting... the 800 series EVO line is consistently priced over 10% higher than Micron/Crucial. No effort by Samsung to be lowest price. Micron and PNY and Adata seem to be lowest cost. But Samsung still outsells them by 3x or more in channel
  • araczynski
    I have an old 830 120GB as my main OS/boot drive (plus 3 others for games Samsung 250 & 500, plus a Corsair? 750?, plus a few 3TB spinners for storage), have been on the lookout to replace the OS one, just not really sure with what model (probably a ~250GB should be sufficient).

    Stuck between 850/860 EVO and the MX500...
  • araczynski
    115752 said:
    Oh ffs. don't do line graphs if youre just going to make a big brown line. either make it only read from 475-550 so the differences are discernable or leave the graph out. when it looks like one thick line its not giving any usable information.


    the 'zoomed in' graph you're after is what's preferred by marketing departments, as it makes slight variances look huge/significant in order to justify whatever they want to claim.

    the 0-max graphs shown indicate relative real world performance. i.e. what marketing doesn't want you to grasp, i.e. that brands A, B, C, D, E... are the same as far as anyone will care when in use (in that metric).

    Lets keep the marketing crap to a minimum and show the real world stuff.
  • closs.sebastien
    My conclusion is that we don't see any more any differences between sata ssd, so just take the cheaper.
    If you really want the fastest, take a 850pro/860pro in M2 format.
  • cryoburner
    115752 said:
    Oh ffs. don't do line graphs if youre just going to make a big brown line. either make it only read from 475-550 so the differences are discernable or leave the graph out. when it looks like one thick line its not giving any usable information.

    If the lines are on top of each other, then that should stress the fact that the differences between them are so minimal that it doesn't really matter. Stretching the range out to fill the graph would wrongly give many people the impression that the differences are actually worth noting. To a casual observer, a particular drive might look twice as fast as the competition on such a cropped graph, when in reality there might only be a two percent difference in performance between the drives. And only the sequential test graphs are really like that here, since these particular drives are all SATA models running into the performance limits of the SATA interface. On an NVME drive review, the differences will be much larger, since they aren't getting capped by the performance limits of SATA. See the sequential graphs in this review, for example...
    http://www.tomshardware.com/reviews/plextor-m9pe-ssd-review,5408-2.html

    Overall, this drive seems pretty underwhelming though. Overall performance might be slightly higher than the competition, but at a significantly higher cost. Compared to the Crucial MX500, you're looking at a 25% higher price on the 500GB model for performance differences that will be indistinguishable. Samsung is using their brand recognition as an excuse to increase the prices of these drives while offering practically the same performance.

    2131435 said:
    "The 860 EVO has half the endurance of the new 860 Pro, but it's still quite a bit more than competing products. It's a good argument, but who really cares?" Well, I do. For that reason I only buy the Pro ones and I'd buy the EVOs above all the others if the Pro weren't available.

    Unless you're using the drives for certain professional workloads that involve a huge amount of writes, that really shouldn't matter though. Comparing the 512GB models, for example, the 860 Evo is rated for 300TB of writes, while the 860 Pro is rated for 600TB. In order to hit that amount of writes within the drive's 5-year warranty, you would need to write over 160GB of data to the 860 Evo every single day for 5 years, or over 320GB to the drive every day for the 860 Pro. Most people don't write much more than 10GB to their drive each day, and at that rate it would take over 80 years to hit that amount of writes for the Evo, and over 160 years for the Pro. Other components of the drives would undoubtedly fail long before that, assuming the performance and capacity of these drives is considered adequate to be useable even 10 years from now.

    It's also been shown that these endurance ratings are not hard limits (except on Intel drives), and the drives can typically handle far more writes than they are rated for. The rating is more there for warranty purposes, and to help give the impression that the professional models are somehow better, but in practice, practically no one will be writing anywhere close to those amounts of data to their drives.
  • Lutfij
    Nicely written, Chris! This will help in narrowing down an SSD when friends coming knocking.
  • JonDol
    582021 said:
    Unless you're using the drives for certain professional workloads that involve a huge amount of writes, that really shouldn't matter though. Comparing the 512GB models, for example, the 860 Evo is rated for 300TB of writes, while the 860 Pro is rated for 600TB. In order to hit that amount of writes within the drive's 5-year warranty, you would need to write over 160GB of data to the 860 Evo every single day for 5 years, or over 320GB to the drive every day for the 860 Pro. Most people don't write much more than 10GB to their drive each day, and at that rate it would take over 80 years to hit that amount of writes for the Evo, and over 160 years for the Pro. Other components of the drives would undoubtedly fail long before that, assuming the performance and capacity of these drives is considered adequate to be useable even 10 years from now.


    Hey there,
    For me, your post is a typical example of the differences between the theory and the reality and knowing the reality I don't feel confortable with your theory. You don't have to write those ammounts of data yourself, others will take care of that for you:
    - if I leave my computer idle for a few hours with absolutely no apps/useless services started, there is an intense disk activity although I only have manual antivirus scans and I've disabled all the known AV, Microsoft, Intel and other telemetry tasks
    - some months ago we were talking about a buggy Spotify app that wrote about 300 GB of data daily (or maybe even hourly?)
    - no doublt there are other similar examples

    So buying the Pros brings some more peace of mind and I'm willingly paying its cost.

    Cheers