Samsung Electronics continues up-dating of the SSD families for a consumer segment of the market. In the near future the company will release successors of M.2 – the drives Samsung 960 Evo and their OEM analogs PM961. SSD Samsung of a new series designated as PM981 were noted in price lists of e-commerce shops of China and Vietnam. One of with marking of MZVLB512HAJQ has the volume of 512 Gbytes, and his fellow is expected by MZVLB1T0HALR storage 1 Tbyte of data.
Drives were released in August and September of the current year and initially intended for systems assembled, but as a result “filtered” into retail. According to Tom’s Hardware, the South Korean developer is going to get rid of suffixes of Evo and Pro in the preparing SSD, having given preference to “blank” numerical indexes.
On this logic, the PM981 version for retail will receive the name 980. A basis of drives are 64-layer the flash memory of Samsung TLC V-NAND and the Samsung Polaris V2 NVMe-controller.
With use of new chips of V-NAND and the controller of Polaris of second generation the drives PM981 received the considerable gain of speed of record concerning 960 Evo.
Especially it is noticeable on terabyte model with a speed of sequential data record up to 2,4 Gbytes / with (a gain of 41%) and to the maximum number of IOPS in case of record in 440 000 (a gain of 22%). Speed of serial reading at high Samsung PM981 reaches 3,2 Gbytes / with that is not much lower than restriction of throughput of four PCI Express lines in 32 GT/with or 3,94 Gbytes / page.
The number of IOPS when reading is estimated in 380 000. All above-mentioned parameters of high-speed performance are relevant only for 1-Tbyte PM981 option: at more available in the price plan of 512-Gbyte SSD indices are more modest. So, speeds of a read and write respectively reach 3 Gbytes / with and 1,8 Gbytes / with, and the number of IOPS — 270 000 when reading and 420 000 in case of record.
Apparently in the provided photos, the Polaris V2 controller in both cases is equipped with the metal plate promoting the best heat extraction.
Unfortunately, the sticker on the cooling plate has a converse effect. Both drives, most likely, one-sided; on their back surface there can be a copper plate for heat extraction. The first quotations on Samsung PM981 are quite democratic: an equivalent of $233 in the Vietnamese dong for 512-gigabyte M.2 SSD and $439 for terabyte model.