OWC Mercury M.2 2Tb NVMe SSD detailed review

Posted on November 07, 2022 by Raymond Chen

How fast is the OWC Mercury M.2 2Tb and more characteristics explore on this site.

OWC Mercury M.2 2Tb NVMe SSD detailed review

OWC's 2Tb Mercury M.2 works on Silicon Motion SM2260. The Mercury M.2 comes equipped with MLC flash memory. This NVMe also available in 3 capacities: 500 Gb, 250 Gb and 1 Tb.

Performance and benchmarks

Storage use PCIe M.2 3.0 x 4 interface with write speeds 1087 Mbps, and maximum read speeds 1872 Mbps. It also has input/output performance 190000 on writing and 155000 on reading operations per second.

Endurance and warranty

Manufacturer give 3 years warranty.


Category Value
Capacity 2 Tb
Interface M.2 3.0 x 4
Controller Silicon Motion SM2260
Memory type MLC
DRAM n/a
Read speed (Mb/s) 1872
Write speed (Mb/s) 1087
Read IOPS 155000
Write IOPS 190000
Endurance (TBW) n/a
MTBF (million hours) n/a
Warranty (years) 3


Mercury M.2 (2Tb) produced by OWC support PCIe Gen3 that is significantly slower than PCIe 4.0. The maximum write speed is 1087 Mbps, that is slower than has most of rivals. After evaluating all the facts, OWC Mercury M.2 2Tb has more minuses and our site do not advise to purchase it.

+ Pros

  • Capacity

- Cons

  • Slow writing speed
  • PCIe 3.0

Buy this or similar SSD:

Video Review

Review: OWC Express 4M2 SSD enclosure - 8TB!


The OWC Mercury M.2 has no Dynamic Random-Access Memory or data about it is not known. Dynamic Random-Access Memory makes SSD faster, but also more expensive.

The OWC Mercury M.2 due to the high density of memory chips you need to install of extra heat sink. This would decrease temperature of the memory chips and controller. Some motherboards from the factory has thermal pads below and above the drive for improving productivity during heavy loads.

The OWC Mercury M.2 has maximum write speed 1087 Mbps, read speed 1872 Mb per second. Storage run on Silicon Motion SM2260 controller and M.2 3.0 x 4 high-speed serial computer expansion bus standard. The NAND flash memory type is MLC.
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