OWC Mercury M.2 500Gb SSD detailed specs

Posted on November 07, 2022 by Raymond Chen

OWC's Mercury M.2 NVMe SSD works on PCIe M.2 3.0 x 4 computer expansion bus standard. More details about this NVMe SSD here.

OWC Mercury M.2 500Gb SSD detailed specs

Mercury M.2 (500Gb) produced by OWC is powered by Silicon Motion SM2260. The Mercury M.2 comes equipped with MLC memory. Internal SSD is offered also in three capacities: 250 Gb, 1 Tb and 2 Tb.

Performance and benchmarks

Storage use PCIe M.2 3.0 x 4 bus with read speeds 1872 Mbps, and sequential write speeds equals to 1087 Mbps. Mercury M.2 has IOPS 155000 on reading and 190000 on writing operations per second.

Endurance and warranty

OWC provide 3 years warranty for this product.


Category Value
Capacity 500 Gb
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 (500Gb) produced by OWC may work on PCIe 3.0 that is twice slower than PCIe 4. The write speed is 1087 Mb/s, that is slower than has most of rivals. Overall, OWC Mercury M.2 500Gb has more minuses and our editor do not advise to spend money for it.

+ Pros

  • None

- Cons

  • Slow writing speed
  • PCIe 3.0
  • Capacity

Buy this or similar SSD:

Video Review

M.2 vs NVME: What's the difference?


The Mercury M.2 500Gb has no DRAM in their controller or data about it is not known. Dynamic random-access memory (DRAM) in their controller help to increase input/output performance and endurance.

The Mercury M.2 500Gb due to the low density of memory chips able to operate with no further heat sinks. Some laptops or motherboards from the factory has additional cooling below and above the SSD for improving performance during times of high loads.

The OWC Mercury M.2 has sequential write speed 1087 Mbps, sequential read speed 1872 Mbps. SSD run on Silicon Motion SM2260 controller and M.2 3.0 x 4 interface standard. The NAND memory type is MLC.
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