Kioxia BG4 1Tb SSD technical specs

Posted on November 07, 2022 by Raymond Chen

How fast is the Kioxia BG4 1Tb and further specs watch here.

Kioxia BG4 1Tb SSD technical specs

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

Performance and benchmarks

SSD use PCIe M.2 3.0 x 4 2230 S3 computer expansion bus standard with read speeds 2300 Mbps, and sequential write speeds equals to 1800 MB/s. This model has input/output performance 200000 on writing and 390000 on reading operations per second.

Endurance and warranty

Kioxia give 5 years warranty period. The BG4 has 1.5 million hours mean time between failure.


Category Value
Capacity 1 Tb
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 (1Tb) produced by Kioxia may work on PCIe 3.0 that is significantly slower than PCIe 4. The sequential write speed is 1800 Mbps, that is slower than has most of competitors. On balance, Kioxia BG4 1Tb has more disadvantages and our site strongly do not advise to purchase it.

+ Pros

  • Capacity

- Cons

  • Slow writing speed
  • PCIe 3.0

Buy this or similar SSD:

Video Review



The Kioxia BG4 1Tb is DRAMless storage or information about it is not known. Dynamic Random-Access Memory in their controller help to improve input/output performance and endurance.

The Kioxia BG4 1Tb due to the low density of memory chips may last without additional heat sinks. Some motherboards from the factory has additional cooling below and above the SSD to improve performance during high loads.

The Kioxia BG4 has write speed 1800 Mbps, sequential read speed 2300 Mb per second. SSD run on Toshiba controller and M.2 3.0 x 4 2230 S3 interface standard. The NAND memory type is Toshiba 3D TLC.
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