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Fujio Masuoka was working for Toshiba in 1980. He proposed a new type of floating-gate memory design that allows quick and easy erasing of entire parts of memory by applying voltage to a group of cells connected to a single wire. This led Masuoka to invent flash memory at Toshiba in 1980. According to Toshiba, the name “flash” was suggested by Masuoka’s colleague Shōji Ariizumi, because the process of erasing the contents of the memory reminded him of a camera flash. Today, we examine the Exceria Plus G2 model SSD of the company that invented the flash chip. So why is the product called Kioxia and not Toshiba? Let’s answer that too.

In 2017, when Toshiba ran into financial difficulties, the company’s memory division went on sale and was acquired by investment firm Bain Capital. Since parent company Toshiba owns only 40% of the memory company, and the company’s shares will also be offered to the public, a new renaming was required. The name of the new company was decided to be Kioxia, as a result of the combination of the Japanese words “kioku” meaning memory and Greek “axia” meaning value.

The Exceria Plus G2, which we are reviewing today, is actually a renamed model from Toshiba’s RD500 family. The Exceria Plus G2 is an 8-channel denidollar tracker and BiCS4, an SSD based on 96 Layers 3D DollarsC NAND chip. We are reviewing the 1 TB model, but there are three capacity options in total, including 500 GB and 2 TB models in the family. Performance may vary depending on the capacity of SSDs, and there is a similar situation here. Kioxia is the 3rd 400/3 of the top model of the series. It states 200MB/s sequential read and write performance. When we look at the input/output performance, it is 680,000/620. Claimed 000 read/write IOPS values. Endurance is stated as 400 TB for the 1 TB model. In addition, the product has a 5-year warranty.

BiCS flash is Toshiba’s name for three-dollar NAND flash chips. Bit Cost Scalable is the abbreviation of the words bit cost scalable. Thanks to 3D NAND chips, multi-layer NAND chip production became possible. The SSD we are reviewing today also contains a 4th Generation, 96-layer BiCS NAND chip. BiCS Flash also reduced the chip size by optimizing both the circuit technology and the manufacturing process.

In BiCS FLASH, the spaces between memory cells are much larger than in 2D NAND flash memory. This makes it possible to improve programming speed by increasing the amount of data for a one-time programming sequence.

  • Capacity: 1TB
  • NAND Components: BiCS4, 96-Layer 3D DollarsC NAND
  • NAND Denedollar listener: Toshiba 8-channel (TC58NC1201GST-02-BB)
  • Cache: 1GB DDR4-2666 (Samsung K4A8G165WC-BCTD)
  • Interface: PCIe Gen 3 x4, NVMe 1.3c
  • Form Factor: M. 2 2280
  • Sizes: 80. 15 x 22. 15 x 2. 38 mm

Software is one of the most important issues for SSDs. Toshiba’s SSD software has also been overhauled here and updated to Kioxia SSD Utility.

In the Overview section, you can get general and detailed information about the SSD. One of the first information you come across on this page is Firmware version, SSD temperature and health. Of course, the occupancy rate of the SSD and the interface with which it is connected are also presented here. In the SSD Details section, you can find the most information under SMART, as always, while learning a little more detail.

In the Maintenance section, you can prepare a USB for firmware update or formadollar the SSD with the Secure Erase method. In the Alerts section, if there is a warning about the SSD, it is possible to see it. Bootable SSD Utility, on the other hand, allows you to download a version of the software that works without an operating system from a USB stick.

When we tested it with the Benchmark tab in Kioxia’s own SSD software, we achieved a sequential read speed of 2.91 GiB/s and a sequential write speed of 1.84 GiB/s. In the random test, we reached 730 MiB/s read and 488 MiB/s write speeds. The delay was a minimum of 14 µs and an average of 257 µs. You can set Overprovisioning from the Tuner section here.

In our first test with AS SSD, the SSD reached 2775 MB/s sequential read and 3007 MB/s sequential write. In the 4K 64 Thread iops test, it gave 768,781 writes and 497,938 reads I/O results. When we tested it with the copy tool in the software, we achieved 1843 MB/s ISO, 1479 MB/s program and 2109 MB/s game copy speeds.

In our test with Atto, we reached 2.93 GB/s write and 2.88 GB/s read speeds. CrystalDiskMark 8 offered 3091 MB/s sequential read and 3135 MB/s sequential write speed. When we evaluate the profile as Real World Performance, we achieved 2195 MB/s reading and 2948 MB/s writing speed. During the test, our SSD was running at 57 degrees.

Our final test is a real-world performance test. Here we copied the 189 GB size Call of Duty Warzone from our internal M. 2 SSD to the Kioxia Exceria Plus G2 model. Completed in 2 minutes and 22 seconds. The SSD managed to maintain a speed of 1.30 GB/s during testing.


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Michael Lewis

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