Kioxia BG4 128Gb NVMe detailed specs

Posted on November 07, 2022 by Raymond Chen

What memory type installed in BG4 (128Gb) produced by Kioxia and extra details watch on our page.

Kioxia BG4 128Gb NVMe detailed specs

Kioxia's 128Gb BG4 SSD is powered by Toshiba controller. The BG4 comes equipped with Toshiba 3D TLC flash memory. This NVMe also available in three capacities: 512 Gb, 1 Tb and 256 Gb volume sizes.

Performance and benchmarks

Kioxia BG4 use PCIe M.2 3.0 x 4 2230 S3 bus with read speeds 2300 MB/s, and maximum write speeds equals to 1800 MB/s. This model has IOPS 390000 on reading and 200000 on writing operations per second.

Endurance and warranty

Kioxia provide 5 years warranty period. As well it has 1.5 million hours MTBF.


Category Value
Capacity 128 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


Kioxia BG4 128Gb use PCIe 3.0 that is twice slower than PCIe Gen4. The maximum write speed is 1800 Mb/s, that is slower than has most of competitors. On balance, Kioxia BG4 128Gb has more minuses and our editor strongly do not recommend to purchase it.

+ Pros

  • None

- Cons

  • Slow writing speed
  • PCIe 3.0
  • Capacity

Buy this or similar SSD:

Video Review



The BG4 128Gb is DRAMless drive or data about it is unknown. Dynamic Random-Access Memory makes storage faster, but also more expensive.

The Kioxia BG4 128Gb due to the low density of memory chips may work with no extra heat sinks. Some motherboards already has thermal pads below or above the storage to enhance performance during times of high loads.

The BG4 128Gb has maximum write speed 1800 Mb per second, sequential read speed 2300 Mb per second. It works on Toshiba controller and M.2 3.0 x 4 2230 S3 high-speed serial computer expansion bus standard. The memory type is Toshiba 3D TLC.
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