The Plextor PX-256M8SeGN is the 256 GB model of Plextor’s NVMe-M.2 series M8SeGN. This memory size is one of the most popular, as it is priced within an acceptable range for most people. As an NVMe-M.2 SSD, it also offers significantly higher speeds than an outdated HDD and also easily depends on SATA SSDs. Here Plextor promises a sequential reading speed of up to 2,400 MB/s and a sequential writing speed of up to 1,000 MB/s. Whether the SSD really delivers this performance and is worth the purchase, we clarify for you in our test.
The used Marvell 88SS1093 controller is the first SSD controller from Marvell with NVMe- and PCI Express 3.0. It was presented at the CES 2015 with a data rate of about 2.9 GB/s. For the 2,400 MB/s of the Plextor M8SeGN, it is therefore ideally suited. With a TBW (Total Bytes Written) of 160 TB, the SSD is in the mid-range of durability, which is more than enough for most. Over a period of 10 years, you could write more than 43 GB on the SSD every day – by then we’ll certainly have completely different speeds and a new purchase is pending. Plextor uses 15nm TLC NAND from Toshiba.
Before starting our test we updated the firmware to the current version 1.02.
Compare technical data
|Plextor M8SeGN 256 GB (PX-256M8SeGN)|
|Cache||512 MB LPDDR3|
|NAND Flash||Toshiba 15nm TLC|
|Firmware at time of test||Version 1.02|
|Sequential reading speed||Up to 2,400 MB/s|
|Sequential write speed||Up to 1,000 MB/s|
|Random Read||Up to 205,000 IOPS|
|Random Write||Up to 160,000 IOPS|
|Interface||PCIe 3.0 x4, NVMe 1.1|
|Reliability||MTBF: 1.5 million hours|
|Functions||TRIM (operating system support required), S.M.A.R.T, IO queue|
|Operating temperature||0 °C to +70 °C|