Toshiba BG4 NVMe SSD Review (Page 3)

| Aug 9, 2019 at 9:52 am CDT

Sequential Performance

Sequential Read Performance

Toshiba BG4 NVMe SSD Review 002 |

The 1TB BG4 achieves its 2,300 MB/s sequential speed in our test. The drive needs a little lift-off time to get there but manages to meet the spec at queue depth 4 and beyond. This is faster than the Crucial P1, Intel 660p, and Mushkin Helix-L. The Crucial and Intel both use 4-bit per cell flash. The Mushkin is the only other DRAMless SSD in the charts today.

Sequential Write Performance

Toshiba BG4 NVMe SSD Review 003 |
Toshiba BG4 NVMe SSD Review 004 |

The drive also achieves its 1,800 MB/s sequential write rating, and that's higher than all but the Samsung 970 EVO. The performance is remarkably high for an embedded drive.

Sustained Sequential Write Performance

Toshiba BG4 NVMe SSD Review 005 |

Like the 3- and 4-bit SSDs, the high write performance comes from using pSLC programming to increase burst performance, but the writes don't stay high forever. The BG4 shows a couple of levels of cache. The quick burst that drops into a lower tier before reaching native TLC speeds. The large peaks and valleys on the chart lead us to believe that all data first writes to the SLC buffer before folding into the TLC. This increases endurance, but decreases consistency.

Last updated: Sep 24, 2019 at 12:29 am CDT


Chris Ramseyer started his career as a LAN Party organizer in Midwest USA. After working with several computer companies he was asked to join the team at The Adrenaline Vault by fellow Midwest LAN Party legend Sean Aikins. After a series of shake ups at AVault, Chris eventually took over as Editor-in-Chief before leaving to start Real World Entertainment. Look for Chris to bring his unique methods of testing Hard Disk Drives, Solid State Drives as well as RAID controller and NAS boxes to TweakTown as he looks to provide an accurate test bed to make your purchasing decisions easier.

We openly invite the companies who provide us with review samples / who are mentioned or discussed to express their opinion. If any company representative wishes to respond, we will publish the response here. Please contact us if you wish to respond.

Related Tags