consumer SSDs introduced Samsung introduced Samsung 860 Pro and 860 Evo consumer solid-state drives, preliminary information about which appeared some time ago. The novelties are designed to replace the Samsung 850 Pro and 850 Evo models, released in 2014.
As you can understand from the title, the update is just a small evolutionary development of a successful series of solid-state drives of the South Korean giant. And although the new models have received several improvements compared to their predecessors, there is no significant leap forward here.
More specifically, the main innovations in the Samsung 860 SSD, when compared with the previous generation, are 64-layer 3D V flash memory -NAND instead of the 48-layer Samsung 850, the newest controller Samsung MJX and the faster buffer memory Samsung LPDDR4 instead of LPDDR3.
As you already understood, the new drives are also divided into the budget line Evo and professional Pro, which differs slightly higher high-speed till STUDIO and twice higher value TBW (amount of data in terabytes, which can be written to the drive during the warranty lifetime) – TB 4800 2400 against TB in models maximum capacity. The value of the wear resistance index for other variants can be seen from the table with the characteristics below:
The superiority in TBW is due to the use of MLC memory in Pro models capable of storing two bits of information in one cell, whereas in Evo more slow and cheap TLC NAND memory, capable of storing three bits of information in one cell.
As before, Samsung 860 Pro models are made in the size of 2.5 inches and use the SATA 6 Gbit / s interface, and the 860 Evo, in addition to the standard form- factor of 2.5 inches offers another option M.2 and mSATA versions.
Samsung 860 Pro SSDs are available in 256, 512 GB, 1 TB, 2 TB and 4 TB capacities, the buffer memory varies according to the model and is 512 MB for 256 and 512 GB options, as well as 1, 2 and 4 GB for the rest.
The 2.5-inch Samsung 860 Evo will be available in 250GB, 500GB, 1, 2, and 4TB capacities, with M2 sizes in 250GB, 500GB, 1 and 2 TB, and the options for memory capacity in the mSATA version will be three – 250 GB, 500 GB and 1 TB. The cache memory capacity varies with the capacity increase from 512 MB to 4 GB.
The maximum speed of streaming read and write operations for Samsung 860 Pro is 560 and 530 MB / s, respectively. The performance of random read and write operations with blocks of 4 KB (in the queue of 32 requests) reaches 100,000 and 90,000 IOPS.
The Samsung 860 Evo's performance is somewhat lower, as noted above. In particular, the manufacturer's declared sequential read and write speeds are 550 and 520 MB / s respectively, the maximum performance for random reading is 98,000 IOPS, random recording is 90,000 IOPS.
In the Device Sleep mode, Samsung 860 Evo models consume 2, 6-8 mW (the lower threshold corresponds to the lowest-volume model, the higher to the highest-capacity version), and the 860 Pro models are 2.5-7 mW.
The rest can be noted for the support of TurboWrite technology, which provides speed increase in the recording operations by translating a portion of the cells in a high-performance mode and the formation of a kind of cache.
Samsung 860 Evo and 860 Pro will be available for sale this month already. The prices for these SSDs start at $ 95 and $ 140 for the initial capacity models, respectively, and reach $ 1400 and $ 1900 in the case of a maximum memory option.