Kioxia BG4 512Gb NVMe SSD technical specs

Posted on November 07, 2022 by Raymond Chen

What memory type installed in Kioxia BG4 512Gb and extra details explore in our article.

Kioxia BG4 512Gb NVMe SSD technical specs

Kioxia's 512Gb BG4 is powered by Toshiba controller. The BG4 comes equipped with Toshiba 3D TLC memory. Kioxia BG4 also available in 3 capacities, including 128 Gb, 1 Tb and 256 Gb.

Performance and benchmarks

Kioxia BG4 works on PCIe M.2 3.0 x 4 2230 S3 with write speeds 1800 MB/s, and read speeds 2300 Mbps. BG4 has IOPS 200000 on writing and 390000 on reading operations.

Endurance and warranty

Manufacturer provide 5 years warranty period. The BG4 has 1.5 million hours MTBF.


Category Value
Capacity 512 Gb
Interface M.2 3.0 x 4 2230 S3
Controller Toshiba
Memory type Toshiba 3D TLC
DRAM n/a
Read speed (Mb/s) 2300
Write speed (Mb/s) 1800
Read IOPS 390000
Write IOPS 200000
Endurance (TBW) n/a
MTBF (million hours) 1.5
Warranty (years) 5


BG4 (512Gb) produced by Kioxia use PCIe 3 that is undoubtedly slower than PCIe 4. The write speed is 1800 Mbps, that is slower than has most of rivals. Overall, Kioxia BG4 512Gb has more cons and we highly do not advise to have it.

+ Pros

  • None

- Cons

  • Slow writing speed
  • PCIe 3.0
  • Capacity

Buy this or similar SSD:

Video Review



The BG4 512Gb has no dynamic random-access memory (DRAM) or data about it is not known. Dynamic Random-Access Memory in their controller help to improve endurance and input/output performance.

The Kioxia BG4 due to the low density of memory chips may run without further heat sinks. Some motherboards already has thermal pads below or above the storage to improve performance during heavy loads.

The Kioxia BG4 512Gb has sequential write speed 1800 Mb per second, read speed 2300 Mb per second. It operate on Toshiba controller and M.2 3.0 x 4 2230 S3 high-speed serial computer expansion bus standard. The NAND memory type is Toshiba 3D TLC.
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