Samsung 870 EVO MZ-77E1T0BW 1 TB

UA

128-layer memory and proprietary MKX Metis controller

The Samsung 870 EVO is the latest SATA 3-connected drive in the EVO series that Korean engineers have really messed with. Despite belonging to the entry level, it uses not the usual 64-layer, but an advanced 128-layer TLC 3D V-NAND memory of its own production, which has an increased wear life. And to control the device, a modified controller of its own production MKX Metis was used, which distinguishes this drive from other inexpensive SSDs.

Passes tests for 5+

Thanks to these factors, the Samsung 870 EVO drive easily passes any stress tests, and the speedometer in the CrystalDiskMark conditional benchmark practically does not fall below the declared 530/560 MB/s. In addition, the drive uses Turbo Write combined caching technology, which, when the buffer is full, can add several gigabytes of dynamically allocated TLC memory to 1 GB of a fixed buffer. Thanks to this, the disk is much more difficult to fill with large files, which will reduce the speed from the conditional 500 MB / s to 100 MB / s. Separately, it should be noted the high speed of unbuffered random reading, which in many cases smooths out the difference between drives with SATA 3 and M.2 connections.

High quality and reliability

The contrast is especially striking with the not entirely successful predecessor 860 EVO, which worked more slowly, was more capricious and could not boast of the same reliability. Compared to it, the 870 EVO's guaranteed write capacity has doubled and now stands at 600 TB. The total time between failures is declared at 1.5 million hours, and the official warranty from the manufacturer is not 3, but 5 years. All this makes the Samsung 870 EVO perhaps the most interesting option in cases where it is not possible to use faster and more modern NVMe SSDs. True, the cost of the device in some cases is twice the cost of low-cost SATA 3 SSDs from Crucial, Kingston, Patriot and other manufacturers.