Review ổ cứng ssd samsung 250gb 500gb 860 và 870 evo sata iii 2


The Samsung 860 EVO has convinced us: It is now safe lớn equate TLC (Triple-Level-Cell) SSDs with top-notch SATA performance. TLC-NAND SSDs used lớn be more about affordability, but the 860 EVO is the third TLC-NAND drive we"ve tested that doesn"t bog down on long sustained transfers. (The other drives are the identical-except-for-the-label WD xanh 3D and Sandisk Ultra 3D.)

We even quadrupled our normal 20GB copies, và the 860 EVO easily maintained the pace. In fact, despite being quite a bit cheaper, the 860 EVO"s performance compares more than favorably with that of its 860 Pro cousin. You can kiểm tra out all our SSD reviews in the full roundup. 

Note: This review is part of our best SSDs roundup. Go there for details about competing products and how we tested them.Bạn vẫn xem: Customer reviews: samsung ssd 860 evo 250gb 2

Design & features

Though the 860 EVO is available in the 2.5-inch size factor, we tested the M.2 2280 (22mm across, 80mm long) version in the 1TB capacity. Both are SATA 6Gbps and available with up to 4TB of capacity. Fitting that much storage into something little bigger than a stick of gum is quite the achievement. The controller is Samsung"s own MJX, và the NAND it"s feeding & reading from is Samsung"s own stacked/layered/3D 3-bit TLC.

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The 860 EVO is Samsung"s answer to lớn the TLC sustained-write lag. And the answer is there isn"t any, any longer.

As khổng lồ the controller, I didn"t speak to Samsung about it, but the scuttlebutt I"ve heard around the industry is that while TLC (when written to lớn its full 3-bit capacity) is indeed slower than 2-bit MLC or 1-bit SLC, it"s been primarily the controllers that have held back performance. The latest generation of controllers apparently knows how khổng lồ cope with the slower write times. Whether this translates into increased latency (the time between the data"s being captured to the drive & permanently written) hasn"t been discussed.

Mentioned in this article

Samsung 860 EVO 250GB M.2 SATA Internal SSD (MZ-N6E250BW) MSRP $94.99See it

Initial pricing for the 860 EVO is $95 for 250GB, $170 for the 500GB version; $330 for the 1TB flavor we tested, $650 for the 2TB version; & the 4TB version is $1400. On a per-gigabyte basis, that"s around 31-35 cents, while the 860 Pro varies between 47 & 51 cents per gigabyte. Note that the 860 Pro offers slightly more storage per capacity in the smaller sizes, at 256GB and 512GB.

The 860 EVOs are rated for 600TBW (TeraBytes Written) for every 1TB of capacity over their lifespan. This is about half what the 860 Pros are rated for, but typical for the low end of the market, and far more than the average user will ever write.


By just about every metric, the 860 EVO is the fastest TLC SATA SSD we"ve tested, if only by a slim margin. But it"s a clear improvement over the previous 750 and 850 EVOs, và faster than many MLC SSDs. In the performance charts below, the 860 EVO is the turquoise-colored bar. 


The 860 EVO (turquoise bars above) is a clear improvement over the 850 EVO & on a par with the best of the latest TLC-NAND SSDs such as WD"s xanh 3D.

As you can see above, there"s not a lot lớn choose from between the 860 EVO and the WD Blue 3 chiều (green bars), but the older 850 EVO (red bars) is clearly a step behind with sustained transfers.


AS SSD, shown above, reveals the same story. CrystalDiskMark (shown below) calls out the one area, small queued writes, where the 860 EVO clearly outperforms the WD blue 3D.

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CrystalDiskMark showed the one area where the 860 EVO clearly outshone the WD blue 3D--random queued writes.

Same-model SSDs can vary drastically in performance according to lớn their capacities, because the less capacious models have fewer chips and pipelines for shotgunning data. Samsung rates all its capacities the same for the same performance. We didn"t have other capacities khổng lồ test, but based on previous testing and experience, we find this claim likely lớn be just.

As sustained write speed is no longer a concern with the latest TLC SSDs, the only reason lớn go with an pricier MLC drive such as the 860 Pro is if you"re concerned about longevity or write far more data daily than the average user. Cảnh báo that the average SSD is rated for at least 10 years averaging 10GB of writes a day. Và privately, vendors are convinced they"ll deliver more. That"s not a promise, just reassurance for the faint of heart.


The 860 EVO is the fastest TLC SSD we"ve tested, albeit by a gnat"s eyebrow. But a win is a win, and given the same price, we recommend it over the WD xanh 3D and Sandisk Ultra 3D. That said, you"ll be more than happy with any of the three, so if you find the latter two significantly cheaper, go for it. Subjectively, you"ll never be able khổng lồ tell the difference.

Caveat emptor: There are still lots of older TLC SSDs out there with slow to pitifully slow sustained writes. Siêu thị carefully, & of course, read our other SSD reviews.

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The Samsung 860 EVO delivers performance every bit as good as its MLC rivals. It"s a worthy competitor for the WD blue 3D and Sandisk 3D, two other TLC drives that are undoing TLC"s weak reputation.

ProsExcellent performance on a par with MLC drivesVery affordableVery fast with small queued writesConsLess long-lived than the MLC (2-bit) SSDs Related:

Jon is a Juilliard-trained musician, former x86/6800 programmer, & long-time (late 70s) computer enthusiast living in the San Francisco cất cánh area. Jjacobi