128-Layer 3D NAND

[SteelCrysis]

https://www.tomshardware.com/news/samsun...es-870-evo

Samsung is preparing to update its EVO lineup of SSDs with the new 870 EVO series, featuring generational improvements to Samsung's current 860 EVO lineup.

Samsung uses the latest 128-Layer 3D TLC NAND technology (same as the 980 Pro) for its 870 Evo, which could boost read and write speeds by up to 10% (if the SATA 3 interface will allow it) and increase queue depth 1 performance by up to 30%.

The drives come in capacities ranging from a paltry 250GB up to a capacious 4TB. Samsung covers the drives with a five-year warranty. Both sequential and random performance is identical regardless of the capacity point, with up to 560 MBps of sequential read and 530 MBps of write throughput, and 98,000/88,000 random read/write IOPS on tap.
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The only strange thing about the 870 EVO is its rather high suggested pricing; you can find Samsung's 860 EVO drives for much cheaper than the 870 EVO's prices. However, the 860 EVO lineup has become cheaper over the years, so perhaps we will see the same thing with the 870 EVO.

https://www.extremetech.com/extreme/3192...rikes-back

Remember SATA? We don’t talk about the older storage standard much anymore, not since M.2 became popular, but there are still a huge number of SATA SSDs on the market. Samsung’s 870 EVO SSD family is the latest iteration of Samsung hardware to serve that market, and multiple reviews online today testify to the product’s overall effectiveness.

The question of whether to use a SATA versus an M.2 SSD is an interesting example of an area where benchmarks can be accurate and yet fail to convey the experience of using a product. The practical differences between day-to-day use of an M.2 versus a SATA drive tend to be unnoticeable. If your daily use patterns involve a lot of heavy data copying, you’ll probably benefit from an M.2, but if they don’t, you can sometimes save some money and maximize available capacity by opting for a SATA drive. A 2.5″ enclosure offers a lot more room for NAND ICs than an M.2 stick.
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One reason to buy a SATA SSD as opposed to an M.2 drive is the difference in price. Looking back at previous drives, Samsung’s 1TB 860 EVO 2.5″ SSD is $109 at Newegg, while its M.2 counterpart — which also uses SATA 6G signaling, even if it fits into an M.2 slot — is $149. While M.2 drives will outperform their SATA counterparts, the difference in commercial software may not be large. (Artificial tests on sequential read/write performance will always favor M.2 drives).
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In this case, the conclusions are straightforward. Hot Hardware writes: “If you’re in need of a high-capacity, top-performing SATA SSD and want something from a well-respected brand with a long track record in the space, the Samsung SSD 870 EVO series should be on the top of your short list.” PCWorld says: “The Samsung 870 EVO is easily the best performer in its class, and a top performer in any class across all usage scenarios.” PCMag writes that the 870 EVO “should be at the top of anyone’s list who wants the best combination of performance, product quality, and price in a 2.5-incher.”

If you’re trying to figure out whether to buy a SATA SSD or an M.2 SSD, here’s ExtremeTech’s advice: If you’re happy with the I/O performance of your current SATA SSD, don’t be afraid to save a few bucks by opting for SATA, especially if you need to trim costs or if you want to put the money towards a better CPU or GPU. If you want to maximize capacity and you’re happy with current performance, don’t be afraid to opt for a larger SATA drive over a smaller M.2. If you’re still sitting on an old-fashioned hard drive and you’ve held off upgrading because SATA is old and your motherboard doesn’t support M.2, forget about that and buy yourself a SATA SSD. Switching from an HDD to an SSD is one of the few guaranteed ways to improve the performance of even an old machine.