Kingston DC400 Enterprise SSD Review (800GB/960GB)

128KB SEQUENTIAL READ/WRITE

Sequential performance is measured similarly to the other two tests before. The drive is first secure erased to get it in a clean state. Next, we precondition the drive with a 128KB sequential write workload at QD256 until the drive is in a steady state. Finally, we cycle through QD1-256 for 5 minutes each for writes and then reads. All this is scripted to run with no breaks in between. The last hour of preconditioning, the average MB/s, and average latency for each QD is graphed below.

Kingston DC400 960GB Pre 128K Kingston DC400 800GB Pre 128K

The DC400 averages 525-530MB/s write, during preconditioning. Just as we saw with the 4K and 8K tests, the over provisioned model delivers better consistency.

Kingston DC400 960GB 128K SR Kingston DC400 960GB 128K SRLKingston DC400 960GB 128K SW Kingston DC400 960GB 128K SWL

In sequential testing, the DC400 is about on par with every other SATA SSD out there. It averages about 560MB/s read and, as we just stated, about 525MB/s write performance in each capacity.

6 comments

  1. There’s that word “plethora” again.

  2. How do you call MLC flash and sequential reads at 560, and writes at 525, entry level for
    sata 3? And if you overprovision it to 800 it now beats out its competition in other categories besides sequential. This sounds like it’s a lot better than entry level for sata 3?

    • I’m referring to it as entry-level due to it’s total performance as well as endurance and price-point in product line-ups in the enterprise market. Compared to other read-oriented SATA SSDs the Kingston at the same capacity typically offers the least performance and lowest endurance in comparison to other similar classed <1 DWPD products and it doesn't have power caps on it in case of a power outage liek others do, simply firmware protection instead. Thus, in comparison, this why I am referring to it as an entry level product. Once you move onto 1-3DWPD SATA SSDs you are now dealing with better performing drives that last longer, thus, not entry-level. Yes, while over provisioned to 800GB it was able to match or beat some of the competition, but it is at the expense of usable capacity. If you were to over provision those other SSDs, you would see similar improvements in performance. At that point it is a whole new comparison of price vs performance vs capacity vs endurance…in which case, with all things being equal, the Kingston may be at the lower end of the totem pole once again.

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