The Samsung 860 series of solid-state drives (SSDs) has some huge shoes to fill. These new drives, the 860 Evo and therefore the 860 professional, square measure meant to succeed the favored 850 series that, in keeping with Samsung, is that the popular line of SSDs in major markets like the us and Europe. Launched in 2014, the 850 series was therefore triple-crown as a result of it uses Samsung's V-Nand technology, during which memory chips square measure stacked vertically to extend storage density.
This technology, conjointly referred to as 3-D Nand, has lowered the price of SSDs and helped to extend their most storage capacities from many gigabytes to terabytes in recent years. While the 850 series started employing a 32-layer V-Nand style, it had been upgraded to a 48-layer style in later variants. The new 860 series pushes this additional with a 64-layer style. It conjointly gets associate updated controller, that manages the SSD's nonvolatile storage to boost performance, correct errors and maximise the life of the SSD.
The distinction between the 860 Evo and therefore the 860 professional lies within the form of nonvolatile storage cell used. the professional variant uses 2-bit MLC (multi-level cell), whereas the Evo uses 3-bit MLC. Thus, the Evo holds additional knowledge (3 bits versus two bits) in every cell, that interprets thereto being cheaper, however conjointly ends up in lower write endurance compared with the professional. Write endurance measures what quantity knowledge is written to the SSD throughout its life - the professional has double the write endurance of the Evo.
Samsung has reduced the professional's warrant amount from ten years for the 850 professional to 5 years for the 860 Pro. Meanwhile, the Evo retains its five-year warrant. In terms of performance, the 860 series is slightly quicker than the 850 on paper. The consecutive scan and write speed for the 860 professional is rated at 560MB/s and 530MB/s severally, compared with 550MB/s and 520MB/s for the 850 professional.
The 860 Evo has a similar consecutive write speed as its precursor (520MB/s), whereas its consecutive scan speed of 550MB/s is just 10MB/s quicker than the 850 version. In short, the 860 series doesn't provide a big leap in performance from its precursor. this is often not a surprise, because the SATA 6Gbps interface utilized by this thought SSD series is that the bottleneck here.
On the opposite hand, the write endurance of the 860 series has been doubled from the 850 series, that may be a huge improvement. to check the 860 series, Samsung sent The Straits Times the professional and therefore the Evo review units within the two.5-inch type issue. the professional is accessible solely during this type issue, whereas the Evo comes within the mSATA and M.2 type factors.
In my testing, the 860 professional and therefore the 860 Evo managed round the 563MB/s mark for consecutive scan speed victimisation the CrystalDiskMark six storage check. The consecutive write speed was similar for each models at concerning 533MB/s. the storage score in PCMark eight was conjointly near-identical for the 2. The 860 professional scored five,009, whereas the 860 Evo managed five,001. In different words, users square measure unlikely to note the distinction between the 2 in everyday usage.